List of delayed-blowback firearms

Short description: None

Below is a list of delayed-blowback firearms.

## Contents

* 1 Lever delayed blowback
* 2 Roller delayed blowback
* 3 Gas delayed blowback
* 4 Flywheel delayed blowback
* 5 Hesitation lock
* 6 Radial delayed blowback
* 7 Screw/Turnbolt delayed blowback
* 8 Toggle delayed blowback
* 9 Vector delayed blowback
* 10 Detent delayed blowback
* 11 References

## Lever delayed blowback

Name  | Manufacturer  | Image  | Cartridge | Country  | Type  | Year

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AA-52 machine gun | Manufacture d'armes de Saint-Étienne  | 250px  | 7.62×51mm NATO
7.5×54mm French |  France  | General-purpose machine gun | 1952
Danuvia 43M  | Danuvia Gepgyar  | 250px  | 9×25mm Mauser |  Hungary | Submachine gun | 1939
Dragon  | Rideout Arsenal  |  | 9×19mm Parabellum |  United States | Semi-automatic pistol | 2025
FAMAS  | Nexter  | 250px  | 5.56×45mm NATO |  France  | Bullpup assault rifle | 1978
FNAB-43  | Fabbrica Nazionale d'Armi di Brescia  | 250px  | 9×19mm Parabellum |  Italian Social Republic | Submachine gun | 1943
Garanin general-purpose machine guns |  |  | 7.62×54mmR |  Soviet Union | General-purpose machine gun | 1957
MAC-58  | Manufacture d'armes de Saint-Étienne  |  | .50 BMG  |  France  | Heavy machine gun  | 1958
San Cristobal Carbine  | Armería San Cristóbal Weapon Factory  | 250px  | .30 Carbine  |  Dominican Republic | Carbine | 1950
ST Kinetics CPW | ST Kinetics |  | 9×19mm Parabellum
FN 5.7×28mm
HK 4.6×30mm |  Singapore | Submachine gun Personal defense weapon | 2008
TKB-517 | Tula State Plant  | 250px  | 7.62×39mm |  Soviet Union | Assault rifle | 1952
VAHAN |  | 250px  | 7.62×39mm |  Armenia | Assault rifle | 1952

## Roller delayed blowback

Name  | Manufacturer  | Image  | Cartridge | Country  | Type  | Year

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BW20[1] | Pakistan Ordnance Factories  |  | 7.62x51mm NATO  |  Pakistan  | Assault rifle | 2021
BW21  | Pakistan Ordnance Factories  |  | 7.62x51mm NATO  |  Pakistan  | Assault rifle | 2021
Calico M960 | Calico Light Weapons Systems | 250px  | 9×19mm Parabellum |  United States  | Submachine gun Carbine | 1990
CEAM Modèle 1950 | Centre d'Etudes et d'Armement de Mulhouse  | 250px  | .30 Carbine
7.92×33mm Kurz |  France  | Assault rifle | 1949
CETME Ameli | CETME | 250px  | 5.56×45mm NATO |  Spain | Light machine gun | 1974
CETME Model L  | CETME | 250px  | 5.56×45mm NATO |  Spain  | Assault rifle | 1981
CETME rifle | CETME |  | 7.62×51mm CETME |  Spain | Battle rifle | 1957
CW56  | Pakistan Ordnance Factories  |  | 5.56×45mm NATO |  Pakistan  | Assault rifle | 2022
DUG  | Rexim S.A.  |  | 7.62×51mm NATO |  Switzerland | Battle rifle | 1956
Heckler & Koch G3  | Heckler & Koch  | 250px  | 7.62×51mm NATO |  West Germany | Battle rifle | 1959
Heckler & Koch G41  | Heckler & Koch  |  | 5.56×45mm NATO |  West Germany | Assault rifle | 1984
Heckler & Koch HK21 | Heckler & Koch  | 250px  | 7.62×51mm NATO |  West Germany | General-purpose machine gun | 1961
Heckler & Koch HK33 | Heckler & Koch  | 250px  | 5.56×45mm NATO |  West Germany | Assault rifle | 1968
Heckler & Koch MP5 | Heckler & Koch  | 250px  | 9×19mm Parabellum |  Germany  | Submachine gun | 1964
Heckler & Koch P9 | Heckler & Koch  | 250px  | 9×19mm Parabellum
.45 ACP
7.65×21mm Parabellum |  West Germany | Semi-automatic pistol | 1965
Heckler & Koch PSG1 | Heckler & Koch  | 250px  | 7.62×51mm NATO |  West Germany | Semi-automatic sniper rifle  | 1972
Korth PRS  | Korth  |  | .45 ACP  |  Germany  | Semi-automatic Pistol | 2010s
MDP-9  | Angstadt Arms  |  | 9×19mm Parabellum |  United States  | Submachine gun Carbine |
PTR rifle  | PTR Industries, Inc.  | 250px  | 7.62×51mm NATO |  United States | Semi-automatic rifle  | 2000
REAPR  | Ohio Ordnance  |  |  |  United States  | Medium machine gun | 2023
SIG 510  | Schweizerische Industrie Gesellschaft  | 250px  | 7.62×51mm NATO |  Switzerland  | Battle rifle | 1957
SIG MG 710-3 | Schweizerische Industrie Gesellschaft  | 250px  | 7.62×51mm NATO |  Switzerland  | General-purpose machine gun | 1955
SRM Arms Model 1216[2] | SRM Arms  | 250px  | 12 gauge  |  United States  | Semi-automatic shotgun  | 2011
Sturmgewehr 45  | Mauser |  | 7.92×33mm Kurz |  Germany | Assault rifle | 1944
Grand Power Stribog SP9A3  |  |  |  |  |  |

## Gas delayed blowback

Name  | Manufacturer  | Image  | Cartridge | Country  | Type  | Year

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Arsenal P-M02  | Arsenal Firearms  |  | 9×19mm Parabellum |  Bulgaria | Semi-automatic pistol | 1999
BFD 1911  | Better Firearms Designs[3] |  | .45 ACP  |  United States | Semi-automatic pistol |
Grossfuss Sturmgewehr | Grossfuss  | 250px  | 7.92×33mm Kurz |  Germany | Assault rifle | 1945
Heckler & Koch P7 | Heckler & Koch  | 250px  | 9×19mm Parabellum
.22 Long Rifle
.32 ACP
.380 ACP
.40 S&W
.45 ACP  |  West Germany | Semi-automatic pistol | 1976
Kevin ZP98  | Zbrojovka Brno  | 250px  | .380 ACP  |  Czech Republic  | Semi-automatic pistol | 2000
Laugo Alien  | Ján Lučanský  |  | 9×19mm Parabellum |  Czech Republic  | Semi-automatic pistol | 2019
Krag–Jørgensen pistol  |  |  | 9×19mm Parabellum |  Norway | Semi-automatic pistol |
PCC  | Sureshot Armament Group  |  | .45 ACP  |  United States | Semi-automatic pistol |
Steyr GB | Steyr Mannlicher  | 250px  | 9×19mm Parabellum |  Austria | Semi-automatic pistol | 1968
Type 77B  | Norinco |  | 9×19mm Parabellum |  China | Semi-automatic pistol | 1981
Volkssturmgewehr  | Gustloff-Werke  | 250px  | 7.92×33mm Kurz |  Germany | Semi-automatic rifle  | 1944
W+F P47  | Waffenfabrik Bern  |  | 9×19mm Parabellum |  Switzerland | Semi-automatic pistol | 1947
Walther CCP  | Walther  | 250px  | 9×19mm Parabellum |  Germany  | Semi-automatic pistol | 2014

## Flywheel delayed blowback

Name  | Manufacturer  | Image  | Cartridge | Country  | Type  | Year

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Barnitzke machine gun |  |  | 7.92×57mm Mauser |  Germany | General purpose machine gun  | 1944

## Hesitation lock

Name  | Manufacturer  | Image  | Cartridge | Country  | Type  | Year

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701 rifle | 208th Research Institute  |  | 7.62x39mm  |  China  | Assault rifle | 1966
M50 Reising | H & R Firearms  | 250px  | .45 ACP  |  United States  | Submachine gun | 1940
Remington Model 51  | Remington Arms  | 250px  | .32 ACP
.380 ACP  |  United States  | Semi-automatic pistol | 1917
Remington R51  | Remington Arms  | 250px  | 9×19mm Parabellum |  United States  | Semi-automatic pistol | 2014
Rudd Arms AR-180  | Rudd Arms  |  | 5.56×45mm NATO |  Canada  | Assault rifle |
SIG MKMO | SIG Sauer  | 250px  | 9×19mm Parabellum |  Switzerland  | Submachine gun | 1930
Star Si 35  | Star Bonifacio Echeverria  | 250px  | 9mm Largo
.38 Auto  |  Spain  | Submachine gun | 1935

## Radial delayed blowback

Name  | Manufacturer  | Image  | Cartridge | Country  | Type  | Year

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CMMG MkG  | CMMG  |  | .45 ACP  |  United States  | Submachine gun | 2017
CMMG Banshee  | CMMG  |  | 9×19mm
.40 S&W
.45 ACP
FN 5.7×28mm
10mm Auto |  United States  | Semi-automatic pistol | 2021
MP-A2  | A Squared Armament  |  | 9x19mm Parabellum  |  United States  | Submachine gun | 2020
NPC-9  |  |  | 9x19mm Parabellum  |  United States  | Submachine gun | 2020
PGS15  | Preppers Gun Shop MFG  |  | 9x19mm Parabellum  |  United States  | Submachine gun | 2020

## Screw/Turnbolt delayed blowback

Name  | Manufacturer  | Image  | Cartridge | Country  | Type  | Year

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BSA Autorifle  | Birmingham Small Arms  |  | .303 British
7.92×57mm Mauser
7.62×54mmR |  United Kingdom | Semi-automatic rifle  | 1924
Demro TAC-1 | Demro Products Inc.  |  | 9x19mm Parabellum
.45 ACP  |  United States | Submachine gun | 1974
Kalashnikov Model 1942  | Mikhail Kalashnikov | 250px  | 7.62x25mm Tokarev  |  Soviet Union | Submachine gun | 1942
Krnka-Hirtenberg  | Hirtenberg Ammunition Factory  |  | 7mm Krnka experimental  |  Austria-Hungary | Semi-automatic rifle  | 1908
Mannlicher Model 1893  | Mannlicher  |  | Patrone 88 |  Austria-Hungary | Semi-automatic rifle  | 1893
Salvator-Dormus M1893 | Škoda Works  | 250px  | 8x50mmR Mannlicher  |  Austria-Hungary | Heavy machine gun  | 1893
Sheppard Autorifle  | U.S. Ordnance Co.  |  | .30-06 Springfield  |  United States | Semi-automatic rifle  | 1921
Thompson Autorifle | Auto Ordnance  | 250px  | .30-06 Springfield  |  United States | Semi-automatic rifle  | 1923

## Toggle delayed blowback

Name  | Manufacturer  | Image  | Cartridge | Country  | Type  | Year

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Pedersen rifle  | Frankford Arsenal  | 250px  | .276 Pedersen  |  United States  | Semi-automatic rifle  | 1926
Schwarzlose machine gun | Steyr  | 250px  | 8×50mmR Mannlicher |  Austria-Hungary | Medium machine gun | 1907

## Vector delayed blowback

Name  | Manufacturer  | Image  | Cartridge | Country  | Type  | Year

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|
|
|
|
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Jatimatic | Tampereen Asepaja Oy  | 250px  | 9×19mm  |  Finland | Submachine gun | 1983–1986
KRISS Vector  | KRISS USA, Inc.  | 250px  | 9×19mm
9×21mm
.357 SIG
.40 S&W
10mm Auto
.45 ACP  |  United States  | Submachine gun | 2006
Piranha pistol  | Piranha International Inc. Corp of NV  |  | 9×19mm  |  United States | Semi-automatic pistol | 1969

## Detent delayed blowback

Name  | Manufacturer  | Image  | Cartridge | Country  | Type  | Year

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Show Low Manufacturing Black-Jack[4] | Show Low Manufacturing  |  | 10mm Auto |  United States | Carbine | 2025

## References

1. ↑ https://www.thefirearmblog.com/blog/pakistan-army-trials-and-the-resurgence-of-the-roller-delayed-blowback-44822362
2. ↑ 1216 BULLISH HEAT - Tactical-Life.com
3. ↑ https://betterfirearmsdesign.com/
4. ↑ https://www.thefirearmblog.com/blog/2024/01/26/shot-2024-show-low-black-jack-is-a-9mm-mashup/

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