12g Capsule [Bisley] CO2 Cartridge (C02) Bulb Per Qty

Please note this is a 12g CO2 cartridge that is only usable with compatible products.

Make sure the product you're planning on using this with, is compatible.

 Description: 

These 12g Capsule [Bisley] CO2 Cartridge (CO2) Bulbs are standard 12-gram CO2 powerlets (also called capsules, bulbs, or cartridges) from the Bisley brand, a trusted UK name in airgun accessories.

Each quantity is 1x Co2 Cartridge

Key Specs & Features

Capacity: Exactly 12 grams of compressed CO2 per cartridge (approximately 15 cubic cm volume at ~60 bar / 900 psi when full).

Design: Non-threaded (pierce-type) with a thin sealed neck. The gun’s piercing pin breaks the seal to release gas.
Dimensions (typical): ~83 mm long × 18 mm diameter; each weighs roughly 42 g when full.

Quality notes: Bisley capsules are high-quality, clean-burning, and often pre-oiled/lubricated. This helps maintain seals, reduces wear on O-rings, and ensures smooth, consistent performance shot after shot.

Performance: One cartridge typically delivers 50–80+ shots in a pistol (varies by gun model, temperature, and leakiness). Pressure stays stable as long as liquid CO2 remains inside.

Compatibility & Use

These are universal 12g CO2 powerlets that fit the vast majority of CO2-powered airguns and replicas that use the small bulb style (including many Duncans, Umarex, Crosman, Webley, and airsoft models). They are not threaded (for larger 88g tanks) or refillable — they’re single-use and designed to be punctured once.

Dispose of empty cartridges responsibly (they’re steel and recyclable once fully depressurized).

Always follow your specific gun’s manual for safe insertion and use.