This magazine is made of metal and fully compatible with aftermarket airsoft guns using the similar design. The capacity of this magazine is 23rds. It takes 1 x 12g Co2 Canister and the valve + O-Ring are reinforced to accept extreme strong pressure of Co2 gas. The end cap of the magazine has patented design of better gasification of Co2 

Selling points:

1. High Quality O-Ring for Co2 sealing is used
2. Fully Compatible with Aftermarket Airsoft Pistol using the similar system
3. Patented design of the End Cap of better gasification of Co2 
4. Designed for APS Dual Power Pistol use
5. Slide Out Bottom Plate Design ** NEW **