EP0572509B1 - Breech lock, especially for hand firearms - Google Patents

Breech lock, especially for hand firearms Download PDF

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Publication number
EP0572509B1
EP0572509B1 EP92906177A EP92906177A EP0572509B1 EP 0572509 B1 EP0572509 B1 EP 0572509B1 EP 92906177 A EP92906177 A EP 92906177A EP 92906177 A EP92906177 A EP 92906177A EP 0572509 B1 EP0572509 B1 EP 0572509B1
Authority
EP
European Patent Office
Prior art keywords
breech
locking
sleeve
piston
annulus
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP92906177A
Other languages
German (de)
French (fr)
Other versions
EP0572509A1 (en
Inventor
Nehemia Sirkis
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pse Produkt- und Systementwicklungsgesellschaft Mbh
Voere Kufsteiner Geratebau- und Handelsgesellschaft Mbh
Original Assignee
Pse Produkt- und Systementwicklungsgesellschaft Mbh
Voere Kufsteiner Geratebau- und Handelsgesellschaft Mbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Pse Produkt- und Systementwicklungsgesellschaft Mbh, Voere Kufsteiner Geratebau- und Handelsgesellschaft Mbh filed Critical Pse Produkt- und Systementwicklungsgesellschaft Mbh
Publication of EP0572509A1 publication Critical patent/EP0572509A1/en
Application granted granted Critical
Publication of EP0572509B1 publication Critical patent/EP0572509B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A3/00—Breech mechanisms, e.g. locks
    • F41A3/12—Bolt action, i.e. the main breech opening movement being parallel to the barrel axis
    • F41A3/14—Rigid bolt locks, i.e. having locking elements rigidly mounted on the bolt or bolt handle and on the barrel or breech-housing respectively
    • F41A3/16—Rigid bolt locks, i.e. having locking elements rigidly mounted on the bolt or bolt handle and on the barrel or breech-housing respectively the locking elements effecting a rotary movement about the barrel axis, e.g. rotating cylinder bolt locks
    • F41A3/26—Rigid bolt locks, i.e. having locking elements rigidly mounted on the bolt or bolt handle and on the barrel or breech-housing respectively the locking elements effecting a rotary movement about the barrel axis, e.g. rotating cylinder bolt locks semi-automatically or automatically operated, e.g. having a slidable bolt-carrier and a rotatable bolt
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A3/00—Breech mechanisms, e.g. locks
    • F41A3/64—Mounting of breech-blocks; Accessories for breech-blocks or breech-block mountings
    • F41A3/74—Obturating or packing devices for gas leak prevention in breech mechanisms

Definitions

  • the invention relates to a locking device, in particular for handguns, with a locking piston which pushes a cartridge into a cartridge chamber and has at least two radially projecting locking elements, with a locking housing which has a locking piston bore, a longitudinal groove per locking element and an annular space into which the locking piston bore and each longitudinal groove open and which is provided with a support surface which can be gripped behind, and with a closure sleeve which, in an open insertion position per locking element, has an extension which is aligned with the longitudinal groove of the closure piston bore, and is rotatably arranged in the annular space between the open insertion position and a locked end position.
  • closure device for example in DE-C 515 972.
  • the closure sleeve completely fills the annular space, and the cavity of the closure sleeve is filled by the inserted piston head and its locking elements.
  • the rear end face of the closure sleeve also covers the longitudinal extensions of the closure piston bore. There is therefore no free space and the sealing piston bore is better sealed.
  • US-A 3,738,223 shows a closure device with a conical closure piston head, on which a deformable element, which carries an extractor for the cartridge case and is deformed when the cartridge chamber is closed, is arranged.
  • a deformable element which carries an extractor for the cartridge case and is deformed when the cartridge chamber is closed.
  • the object of the invention is therefore to design a closure device of the type mentioned at the outset in such a way that in the event of malfunctions, the combustion piston is prevented from kicking back by the closure piston bore.
  • this is achieved in that the annular space and the sealing sleeve have conical sealing surfaces on the cartridge bearing side, that a conical sealing sleeve is provided between the sealing surfaces, and in that the sealing housing has at least one gas outlet opening opening into the annular space on the circumferential side.
  • the conical sealing sleeve improves the sealing of the locking piston bore. If there is a malfunction, gases entering the annular space are discharged through the peripheral gas outlet opening.
  • a preferred embodiment of the invention provides that a locking element spring-loaded to the axis of rotation of the locking sleeve and a locking recess defining the open end position are provided on the circumference of the locking sleeve.
  • a locking element spring-loaded to the axis of rotation of the locking sleeve and a locking recess defining the open end position are provided on the circumference of the locking sleeve.
  • a locking device forming a bayonet lock has a locking housing 1 adjoining the barrel 20 and a displaceable locking piston 8 which is provided with two, three, and possibly also a plurality of locking elements 4 on the circumference.
  • the locking piston bore 2 is provided with a longitudinal groove 9 which opens into an annular space 5.
  • the locking piston 8 advanced into the closed position can be rotated about the axis 3, the locking elements 4 being supported on the end face 6 of the annular space 5, so that the front end 22 of the locking piston 8 resting on the cartridge is inserted into the cartridge chamber formed at the end of the barrel 20 19 is pressed in and locked.
  • the annular space 5 tapers towards the cartridge chamber 19 and has a conical sealing surface 7.
  • a conical sealing sleeve 16 (FIG. 2) and a locking sleeve 10 having a conical sealing surface 15 are rotatably arranged, the bore 18 aligned with the locking piston bore 2 for each locking element 4 having an extension 11, so that the locking piston 8 advanced into the closed position Filling sleeve 10 completely.
  • the closure sleeve 10 is in two end positions by a locking element 12 locked, which is pressed by means of a spring 21 into circumferential locking recesses 13, 14 of the closure sleeve 10.
  • FIGS. 1 and 4 show the unlocked end position of the locking sleeve 10, in which the longitudinal grooves 9 of the locking piston bore 2 and the extensions 11 of the locking sleeve 10 are aligned with one another, and the locking element 12 is pressed into the locking recess 13.
  • the locking piston 8 is now locked, the locking sleeve 10 is also rotated, the locking element 12 snapping into the second locking recess 14 (FIG. 3).
  • the locking elements 4 are supported on the support surface 6 (FIG. 1) of the annular space 5 and the conical sealing surface 15 of the sealing sleeve 10 is pressed against the conical sealing surface 7 of the annular space 5, so that the cartridge chamber 19 seals against the sealing piston bore 2.
  • the sealing piston 8 fills the sealing sleeve 10, which in turn completely fills the annular space 5 and covers the longitudinal grooves 9 of the sealing piston bore 2 (FIG. 3).
  • the annular space 5 is provided with lateral gas outlet openings 17 (FIG. 1), so that in the event of a malfunction, the gases do not escape through the sealing piston bore 2, but can exit through the openings 17.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
  • Lock And Its Accessories (AREA)
  • Catching Or Destruction (AREA)
  • Burglar Alarm Systems (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Dowels (AREA)
  • Hooks, Suction Cups, And Attachment By Adhesive Means (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • Fluid-Damping Devices (AREA)

Abstract

A bayonet-connector-like breech lock has a breech housing (1) and a breech block (8) with at least two radially projecting locking components (4). The enlarged region needed to rotate the locking components (4) takes the form of an annular space (5) wherein a locking sleeve (10) is fitted to rotate between an open and a locked end position. The locking sleeve (10) has a widened section (11) per locking component (4) which is aligned with the widened part (9) of the breech block drilling (2) in the open end position. The annular space (5) is completely filled by the locking sleeve (10) and the pushed-in breech block (8).

Description

Die Erfindung betrifft eine Verschlußeinrichtung, insbesondere für Handfeuerwaffen, mit einem eine Patrone in ein Patronenlager einschiebenden Verschlußkolben, der zumindest zwei radial abstehende Riegelelemente aufweist, mit einem Verschlußgehäuse, das eine Verschlußkolbenbohrung, eine Längsnut pro Riegelelement und einen Ringraum aufweist, in den die Verschlußkolbenbohrung und jede Längsnut münden und der mit einer hintergreifbaren Stützfläche versehen ist, und mit einer Verschlußhülse, die in einer offenen Einschubposition pro Riegelelement eine mit der Längsnut der Verschlußkolbenbohrung fluchtende Ausweitung aufweist, und im Ringraum zwischen der offenen Einschubposition und einer verriegelten Endposition verdrehbar angeordnet ist.The invention relates to a locking device, in particular for handguns, with a locking piston which pushes a cartridge into a cartridge chamber and has at least two radially projecting locking elements, with a locking housing which has a locking piston bore, a longitudinal groove per locking element and an annular space into which the locking piston bore and each longitudinal groove open and which is provided with a support surface which can be gripped behind, and with a closure sleeve which, in an open insertion position per locking element, has an extension which is aligned with the longitudinal groove of the closure piston bore, and is rotatably arranged in the annular space between the open insertion position and a locked end position.

Eine derartige Verschlußeinrichtung ist beispielsweise in der DE-C 515 972 gezeigt. Die Verschlußhülse füllt den Ringraum vollständig aus, und der Hohlraum der Verschlußhülse wird durch den eingeschobenen Verschlußkolbenkopf und dessen Riegelelemente ausgefüllt. Dabei überdeckt die hintere Stirnfläche der Verschlußhülse auch die längsverlaufenden Ausweitungen der Verschlußkolbenbohrung. Es verbleibt somit kein Freiraum und die Verschlußkolbenbohrung ist besser abgedichtet.Such a closure device is shown for example in DE-C 515 972. The closure sleeve completely fills the annular space, and the cavity of the closure sleeve is filled by the inserted piston head and its locking elements. The rear end face of the closure sleeve also covers the longitudinal extensions of the closure piston bore. There is therefore no free space and the sealing piston bore is better sealed.

Die US-A 3,738,223 zeigt eine Verschlußeinrichtung mit einem konischen Verschlußkolbenkopf, auf dem ein verformbares, einen Auszieher für die Patronenhülse tragendes Element angeordnet ist, das beim Verschließen des Patronenlagers verformt wird. Die erhöhte Anpressung der verformten Bereiche an die konischen Flächen des Ringraumes und des Verschlußkolbenkopfes, sowie an den Rillenbereich der Patronenhülse verbessert die verschlußseitige Abdichtung des Patronenlagers.US-A 3,738,223 shows a closure device with a conical closure piston head, on which a deformable element, which carries an extractor for the cartridge case and is deformed when the cartridge chamber is closed, is arranged. The increased pressure of the deformed areas on the conical surfaces of the annular space and the sealing piston head, as well as on the groove area of the cartridge case improves the sealing of the cartridge chamber on the locking side.

Werden hülsenlose Patronen verschossen, so fehlt eine durch die Patronenhülse gegebene Abtrennung, und die verschlußseitige Abdichtung des Patronenlagers stellt ein besonderes Problem dar, das mit den bekannten Mitteln noch nicht zufriedenstellend lösbar ist. Die Erfindung hat es sich daher zur Aufgabe gestellt, eine Verschlußeinrichtung der eingangs genannten Art so auszubilden, daß bei Fehlfunktionen das Rückschlagen der Verbrennungsgase durch die Verschlußkolbenbohrung vermieden wird.If caseless cartridges are fired, there is no separation provided by the cartridge case, and the closure-side sealing of the cartridge chamber represents a particular problem which cannot yet be satisfactorily solved with the known means. The object of the invention is therefore to design a closure device of the type mentioned at the outset in such a way that in the event of malfunctions, the combustion piston is prevented from kicking back by the closure piston bore.

Erfindungsgemäß wird dies dadurch erreicht, daß der Ringraum und die Verschlußhülse patronenlagerseitig konische Dichtflächen aufweisen, daß zwischen den Dichtflächen eine konische Dichthülse vorgesehen ist, und daß das Verschlußgehäuse zumindest eine umfangseitig in den Ringraum mündende Gasaustrittsöffnung aufweist. Die konische Dichthülse verbessert die Abdichtung der Verschlußkolbenbohrung. Kommt es zu einer Fehlfunktion, so werden in den Ringraum eintretende Gase durch die umfangsseitige Gasaustrittsöffnung abgeleitet.According to the invention, this is achieved in that the annular space and the sealing sleeve have conical sealing surfaces on the cartridge bearing side, that a conical sealing sleeve is provided between the sealing surfaces, and in that the sealing housing has at least one gas outlet opening opening into the annular space on the circumferential side. The conical sealing sleeve improves the sealing of the locking piston bore. If there is a malfunction, gases entering the annular space are discharged through the peripheral gas outlet opening.

Damit die Verschlußhülse beim Verschieben des Verschlußkolbens in der zum Einführen der Riegel benötigten offenen Endposition liegt, sieht eine bevorzugte Ausführung der Erfindung vor, daß im Verschlußgehäuse ein zur Drehachse der Verschlußhülse federbeaufschlagtes Rastelement und am Umfang der Verschlußhülse eine die offene Endposition definierende Rastausnehmung vorgesehen sind. Somit kann sich die Verschlußhülse nicht zufällig verdrehen. Eine Verrastung der verriegelten Stellung kann dann ebenso einfach erzielt werden, wenn am Umfang der Verschlußhülse eine zweite, die verriegelte Endposition definierende Rastausnehmung vorgesehen ist.In order for the locking sleeve to be in the open end position required for inserting the latch when the locking piston is moved, a preferred embodiment of the invention provides that a locking element spring-loaded to the axis of rotation of the locking sleeve and a locking recess defining the open end position are provided on the circumference of the locking sleeve. Thus, the closure sleeve cannot twist accidentally. Locking the locked position can be achieved just as easily if a second locking recess defining the locked end position is provided on the circumference of the closure sleeve.

Nachstehend wird nun die Erfindung an Hand der Figuren der beiliegenden Zeichnung näher erläutert ohne darauf beschränkt zu sein.The invention will now be explained in more detail with reference to the figures of the accompanying drawing, without being limited thereto.

Es zeigen:

Fig. 1
einen Längsschnitt durch das Verschlußgehäuse im Verriegelungsbereich des Verschlußkolbens,
Fig. 2
eine Explosionsdarstellung des Riegelbereiches des Verschlußkolbens,
Fig. 3
einen Schnitt nach der Linie III-III der Fig. 1 mit verriegeltem Verschlußkolben und
Fig. 4
eine schematische Stirnansicht der unverriegelten Verschlußhülse aus der durch die Linie IV-IV gesehenen Position.
Show it:
Fig. 1
a longitudinal section through the breech housing in the locking area of the breech,
Fig. 2
an exploded view of the locking area of the locking piston,
Fig. 3
a section along the line III-III of FIG. 1 with the locking piston locked and
Fig. 4
is a schematic front view of the unlocked closure sleeve from the position seen by the line IV-IV.

Eine einen Bajonettverschluß bildende Verschlußeinrichtung weist ein an den Lauf 20 anschließendes Verschlußgehäuse 1 und einen verschiebbaren Verschlußkolben 8 auf, der mit zwei, drei, gegebenenfalls auch mehreren umfangseitigen Riegelelementen 4 versehen ist. Pro Riegelelement 4 ist die Verschlußkolbenbohrung 2 mit einer längsverlaufenden Nut 9 versehen, die in einen Ringraum 5 mündet. Der in die Schließstellung vorgeschobene Verschlußkolben 8 kann um die Achse 3 verdreht werden, wobei die Riegelelemente 4 an der Stirnfläche 6 des Ringraumes 5 abgestützt werden, sodaß das an der Patrone anliegende vordere Ende 22 des Verschlußkolbens 8 in das am Ende des Laufes 20 ausgebildeten Patronenlager 19 eingedrückt und verriegelt ist. Der Ringraum 5 verjüngt sich zum Patronenlager 19 hin und weist eine konische Dichtfläche 7 auf.A locking device forming a bayonet lock has a locking housing 1 adjoining the barrel 20 and a displaceable locking piston 8 which is provided with two, three, and possibly also a plurality of locking elements 4 on the circumference. For each locking element 4, the locking piston bore 2 is provided with a longitudinal groove 9 which opens into an annular space 5. The locking piston 8 advanced into the closed position can be rotated about the axis 3, the locking elements 4 being supported on the end face 6 of the annular space 5, so that the front end 22 of the locking piston 8 resting on the cartridge is inserted into the cartridge chamber formed at the end of the barrel 20 19 is pressed in and locked. The annular space 5 tapers towards the cartridge chamber 19 and has a conical sealing surface 7.

Im Ringraum 5 sind eine konische Dichthülse 16 (Fig.2) und eine eine konische Dichtfläche 15 aufweisende Verschlußhülse 10 drehbar angeordnet, deren mit der Verschlußkolbenbohrung 2 fluchtende Bohrung 18 pro Riegelelement 4 eine Ausweitung 11 aufweist, sodaß der in die Schließstellung vorgeschobene Verschlußkolben 8 die Verschlußhülse 10 vollständig ausfüllt. Die Verschlußhülse 10 ist in zwei Endstellungen durch ein Rastelement 12 verrastet, das mittels einer Feder 21 in umfängliche Rastausnehmungen 13, 14 der Verschlußhülse 10 gedrückt wird.In the annular space 5, a conical sealing sleeve 16 (FIG. 2) and a locking sleeve 10 having a conical sealing surface 15 are rotatably arranged, the bore 18 aligned with the locking piston bore 2 for each locking element 4 having an extension 11, so that the locking piston 8 advanced into the closed position Filling sleeve 10 completely. The closure sleeve 10 is in two end positions by a locking element 12 locked, which is pressed by means of a spring 21 into circumferential locking recesses 13, 14 of the closure sleeve 10.

Fig. 1 und 4 zeigen die unverriegelte Endstellung der Verschlußhülse 10, in der die Längsnuten 9 der Verschlußkolbenbohrung 2 und die Ausweitungen 11 der Verschlußhülse 10 miteinander fluchten, und das Rastelement 12 in die Rastausnehmung 13 eingedrückt ist.1 and 4 show the unlocked end position of the locking sleeve 10, in which the longitudinal grooves 9 of the locking piston bore 2 and the extensions 11 of the locking sleeve 10 are aligned with one another, and the locking element 12 is pressed into the locking recess 13.

Wird nun der Verschlußkolben 8 verriegelt, so wird die Verschlußhülse 10 mitverdreht, wobei das Rastelement 12 in die zweite Rastausnehmung 14 (Fig. 3) einrastet. Dabei stützen sich die Riegelelemente 4 an der Stützfläche 6 (Fig. 1) des Ringraumes 5 ab und die konische Dichtfläche 15 der Verschlußhülse 10 wird gegen die konische Dichtfläche 7 des Ringraumes 5 gepreßt, sodaß das Patronenlager 19 gegen die Verschlußkolbenbohrung 2 abdichtet. Wie aus den Fig. 3 und 4 ersichtlich, füllt der Verschlußkolben 8 die Verschlußhülse 10 aus, die ihrerseits wieder den Ringraum 5 vollständig ausfüllt und die Längsnuten 9 der Verschlußkolbenbohrung 2 überdeckt (Fig. 3). Der Ringraum 5 ist mit seitlichen Gasaustrittsöffnungen 17 (Fig. 1) versehen, sodaß bei einer Fehlfunktion die Gase nicht über die Verschlußkolbenbohrung 2 entweichen, sondern durch die öffnungen 17 austreten können.If the locking piston 8 is now locked, the locking sleeve 10 is also rotated, the locking element 12 snapping into the second locking recess 14 (FIG. 3). The locking elements 4 are supported on the support surface 6 (FIG. 1) of the annular space 5 and the conical sealing surface 15 of the sealing sleeve 10 is pressed against the conical sealing surface 7 of the annular space 5, so that the cartridge chamber 19 seals against the sealing piston bore 2. As can be seen from FIGS. 3 and 4, the sealing piston 8 fills the sealing sleeve 10, which in turn completely fills the annular space 5 and covers the longitudinal grooves 9 of the sealing piston bore 2 (FIG. 3). The annular space 5 is provided with lateral gas outlet openings 17 (FIG. 1), so that in the event of a malfunction, the gases do not escape through the sealing piston bore 2, but can exit through the openings 17.

Claims (3)

  1. Breech mechanism, in particular for hand firearms, with a breech piston (8) which pushes a cartridge into a cartridge chamber (19) and which exhibits at least two radially projecting bolt elements (4), with a breech casing (1) which exhibits a breech piston bore (2), a longitudinal groove (9) per bolt element (4) and an annulus (5) in which the breech piston bore (2) and each longitudinal groove (9) open and which is provided with a rear engagable supporting surface, and with a breech sleeve (10) which exhibits a groove (11) that is in alignment with the longitudinal groove (9) of the breech piston bore (2) in an open feed position per bolt element (4) and which is arranged rotatably in the annulus (5) between the open feed position and a locked end position, characterized in that the annulus (5) and the breech sleeve (10) exhibit on the side of the cartridge chamber conical sealing surfaces (7, 15), that between the sealing surfaces (7, 15) there is a conical sealing sleeve (16), and that the breech casing exhibits at least one gas exit opening (17) opening into the annulus (5) on the circumferential side.
  2. Breech mechanism, as claimed in claim 1, characterized in that the breech casing (1) has a stop element (12) which is spring-loaded relative to the axis of rotation of the breech sleeve (10), and the circumference of the breech sleeve (10) has a notch (13) defining the open feed position.
  3. Breech mechanism, as claimed in claim 2, wherein the circumference of the breech sleeve (10) has a second notch (14) defining the locked end position.
EP92906177A 1991-03-14 1992-03-02 Breech lock, especially for hand firearms Expired - Lifetime EP0572509B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT0056791A AT396297B (en) 1991-03-14 1991-03-14 LOCKING DEVICE, IN PARTICULAR FOR HAND ARMS
AT567/91 1991-03-14
PCT/AT1992/000026 WO1992016809A1 (en) 1991-03-14 1992-03-02 Breech lock, especially for hand firearms

Publications (2)

Publication Number Publication Date
EP0572509A1 EP0572509A1 (en) 1993-12-08
EP0572509B1 true EP0572509B1 (en) 1996-06-26

Family

ID=3494033

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92906177A Expired - Lifetime EP0572509B1 (en) 1991-03-14 1992-03-02 Breech lock, especially for hand firearms

Country Status (5)

Country Link
EP (1) EP0572509B1 (en)
AT (2) AT396297B (en)
AU (1) AU1336292A (en)
DE (1) DE59206666D1 (en)
WO (1) WO1992016809A1 (en)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE88358C (en) *
DE341176C (en) * 1920-07-28 1921-09-26 Emil Libert Self-acting firearm with sliding barrel and locked breech
US1613205A (en) * 1924-05-03 1927-01-04 Soncini Cesare Automatic firearm with recoiling barrel
DE515972C (en) * 1929-04-30 1931-01-17 Simson & Co Automatic firearm with sliding barrel and a chamber that can be locked to the barrel with a rotating locking ring
US3776096A (en) * 1971-10-21 1973-12-04 J Donovan Gas operated firearm
US3738223A (en) * 1971-11-23 1973-06-12 Us Army Obturator-extractor device for firearms
FR2215599A2 (en) * 1972-02-15 1974-08-23 Figura Carmel

Also Published As

Publication number Publication date
AU1336292A (en) 1992-10-21
AT396297B (en) 1993-07-26
ATE139835T1 (en) 1996-07-15
ATA56791A (en) 1992-11-15
WO1992016809A1 (en) 1992-10-01
DE59206666D1 (en) 1996-08-01
EP0572509A1 (en) 1993-12-08

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