Description S&W M&P 15-22 25 round magazine is standard factory equipment. This magazine is for M&P15 rifle models chambered in .22 LR. The Military & Police (M&P) magazine is made of polymer and is made to Smith & Wessonâs specifications and tolerances, using the same manufacturing and materials as the original equipment magazines to ensure perfect fit and operation.PRODUCT DETAILSmith & Wesson M&P15-22 .22 LR Magazine 25 Rounds Polymer FDE Caliber: .22 Long Rifle Capacity: 25 Rounds Body Material: High Impact Polymer Spring Material: Heat Treated Spring Wire Follower Material: Polymer Follower Color: Orange Polymer baseplate Finish: Flat Dark Earth (FDE)