Gyrojet Carbine
| Factions | Weapon | Icon | Classes | Ammo |
|---|---|---|---|---|
 US |
 Gyrojet Carbine |
 |
Special Loadout Zombies |
6 / 36 |
| Damage Base | Headshot × | Chest × | Stomach × | Leg × | Arm × | Bayonet | Rifle Grenades | Reload Speed | |
|---|---|---|---|---|---|---|---|---|---|
| Partial | Empty | ||||||||
| 60 | ×3.7 = 222.0 | ×2.4 = 144.0 | ×2.3 = 138.0 | ×1.3 = 78.0 | ×0.95 = 57.0 | NO | NO | Seconds | Seconds |
| Designation | Weapon Type | Fire Modes | Fire Rate | Bullet Spread ° | Range Modifier | Muzzle Velocity | Projectile weight | Weight |
|---|---|---|---|---|---|---|---|---|
| Mark I Model B | Carbine | Semi | 150 RPM | 7° & 1.5° ADS | 1 | 403 m/s | 0.7 g (10.8 gr) | 2.6 kg (5.73 lbs) |
| Full name | Caliber | Place of Origin | Date | Manufacturer | Barrel Length | Total Length | Weapon Script Name |
|---|---|---|---|---|---|---|---|
| MBA Gyrojet Mark I Model B Rocket Carbine | 13mm Gyrojet | United States Of America | 1966 | MB Associates (MBAssociates) | 18.5 in (470 mm) | 32 in (813 mm) | weapon_gyrojet_carbine |
The Gyrojet Carbine is a shoulder-fired variant of the MB Associates Gyrojet system, designed to launch 13mm rocket projectiles (“microjets”) rather than conventional bullets. The weapon uses a smoothbore launch tube and a simple internal mechanism with very low recoil, as the projectile’s thrust comes from its own rocket motor rather than high chamber pressure. It is best known as a 1960s experimental/novelty small arm whose rockets accelerate after leaving the barrel, making performance strongly dependent on distance.
HISTORY
MB Associates produced Gyrojet pistols and carbines in the late 1960s, including carbine configurations fitted with a shoulder stock and, on some examples, a telescopic sight. The system’s operating method is unusually simple because there is no empty cartridge case to extract: a forward-mounted hammer drives the rocket rearward against a fixed firing pin to ignite it, and the rocket’s movement then re-cocks the hammer as it travels forward through a smoothbore tube.
In practice, the Gyrojet concept suffered from major field drawbacks: the rockets were difficult to manufacture both cheaply and accurately, and they needed some distance to build velocity and effectiveness, making close-range performance comparatively weak. While Gyrojet weapons (notably the pistol) were evaluated in very limited numbers by U.S. MACV-SOG personnel during the Vietnam War, the system was not adopted for wider service and remained a rare experimental curiosity.
Sources
- NRA National Firearms Museum — MB Associates Gyrojet Semi Automatic Carbine
- Imperial War Museums — 13 x 35 : MBA ; 13 mm Gyrojet
- U.S. Patent 3,412,641 — Pistol for firing a miniature ballistic rocket (MB Associates)
- American Rifleman — Behind Enemy Lines: Guns of Vietnam’s SOG Warriors