Has your pistol started using more CO2 than usual? Have you noticed decreasing muzzle velocity? Check the seal on your magazine. If the o-ring is dry, cracked or mishapen it could be leaking. This o-ring is is designed for KWC 1911 blowback magazines.
Why choose this o-ring?
We recommend replacing o-rings once a month. To extend the life of your o-ring, clean and oil it after every use.