The Brownells 1911 .22 10 Round Long Rifle Conversion Magazine is the perfect complement to your 1911 Conversion Kit. Compatible with Marvel, Nighthawk, Advantage Arms, Kimber, STI and Tactical Solutions Conversions, this one magazine fits any need. The durable polymer body and follower can stand up to the harshest use, as this magazine underwent extensive testing, to ensure reliability in your 1911 Conversion. Testing included exhaustive cycling of the follower, spring, feed lips, and the magazine release recess. Feed lip geometry has been optimized to improve feeding. Follower has been designed to improve round stacking, to prevent misfeeds. Magazine base pad is removable for maintenanc Mfg: Brownells SPECS: Fits - 1911 .22lr Converions, including: Marvel, Nighthawk, Advantage Arms, Kimber, STI, Nelson Conversion and Tactical Solutions. Construction - Polymer. Finish - Black. Capacity - 10 Rounds.