Bushmaster AR-15 450BM 5 Round Rifle Magazine Black. 450 Bushmaster 5RD Stainless-Steel Magazine Specifications for Bushmaster AR-15 450BM 5 Round Rifle Magazine: Manufacturer: Bushmaster Color: Black Fabric/Material: Aluminum Magazine Capacity: 5 Round Caliber: .450 Bushmaster Gun Make: AR Platform Gun Model: AR-15 Gun Type: Rifle Quantity: 1 Features of Bushmaster AR-15 450BM 5 Round Rifle Magazine The .450 Bushmaster 5RD Stainless-Steel Magazine Package Contents: Bushmaster AR-15 450BM 5 Round Rifle Magazine What firearm models does the manufacturer say Bushmaster AR-15 450BM 5 Round Rifle Magazine is compatible with? The manufacturer says that Bushmaster AR-15 450BM 5 Round Rifle Magazine is compatible with AR-15Bushmaster F419187-5RD: AR-15 450BM 5 Round Rifle Magazine Black