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Another smart design from ALG. The ALG Supersonic Gen 4 Magwell are precision machined from billet 6061-T6 aluminum and is designed to seamlessly fit Gen 4 Glock 17, 22, 24, 31, 34, and 35 without modification to the Magwell or the Glock pistol frame itself. The AFM is finished using a type 3 hardcoat anodize process which allows the it to be long lasting and durable. 

For Gen 4 Glock 17, 22, 24, 31, 34, and 35