Crosman GI Model 1911BB — CO₂ Blowback BB Pistol (4.5mm / .177)
Bring backyard plinking and range practice to life with the Crosman GI Model 1911BB — a full-metal, compact 1911-style BB pistol that balances authentic feel with approachable power. The realistic blowback slide and metal construction deliver satisfying recoil and weight, making every shot feel true to the original while remaining safe and fun for responsible recreational shooting.
This pistol runs on single 12g CO₂ cartridges and pushes 4.5mm (.177) BBs up to around 450 FPS, giving solid short-range performance for target work and casual use. It feeds from a 20-round magazine and includes user-friendly features like detachable grips and an integrated CO₂ tool for quick cartridge swaps — so you spend more time shooting and less time tinkering.
Built to last, the 1911BB pairs attractive lines and a realistic finish with practicality: fixed sights for quick target acquisition, a single-action trigger feel, and a compact footprint that’s easy to carry and display. Whether you’re adding to a collection, practicing fundamentals, or introducing a friend to BB pistols, this Crosman brings classic styling and reliable performance to your kit.
Key Features
| Feature |
| Authentic blowback slide action for realistic recoil |
| Full-metal construction for realistic weight and durability |
| 20-round drop-free magazine |
| Integrated CO₂ tool and detachable grips for easy CO₂ swaps |
| Shoots 4.5mm / .177 BBs up to ~450 FPS |
| Compact, collector-friendly 1911 styling |
Specifications
| Specification |
Detail |
| Model |
Crosman GI Model 1911BB (40021 / 1911BB) |
| Caliber |
4.5 mm (.177) BB |
| Power Source |
CO₂ (single 12g cartridge) |
| Action |
Semi-automatic, blowback
|
| Velocity |
Up to ~450 FPS (with 4.5mm BBs) |
| Magazine Capacity |
20 rounds |
| Construction |
Full metal (slide & frame), polymer grips (detachable) |
| Sights |
Fixed front & rear |
| Trigger |
Single action |
| Overall Length |
Approx. 8.6 in (varies by source) |
| Weight |
Approx. 1.88 lbs (approx. 852 g) |
| Includes |
Pistol, magazine (CO₂ cartridge and BBs sold separately) |
| Safety |
Manual safety lever |
