PRI AR-15 6.8mm/.224 Valkyrie 15 Round Rifle Magazine Black. 8mm SPC waffle magazines with push button floor plate are constructed of butt welded steel halves to create the best internal volume for the magazine. We use Magpul anti-tilt follower with spring and push button floor plate allows for magazine to be quickly disassembled for cleaning. The 15 round magazine is 5.0'' in length. Specifications for PRI AR-15 6.8mm/.224 Valkyrie 15 Round Rifle Magazine: Manufacturer: PRI Color: Black Fabric/Material: Steel Magazine Capacity: 15 Round Caliber: .224 Valkyrie 6.8mm Remington SPC Gun Make: AR Platform Gun Model: AR-15 Quantity: 1 Features of PRI AR-15 6.8mm/.224 Valkyrie 15 Round Rifle Magazine Pri's 6.8mm SPC .224 Valkyrie Steel butt welded waffle magazines with push button floor plate and Magpul follower Package Contents: PRI AR-15 6.8mm/.224 Valkyrie 15 Round Rifle Magazine What firearm models does the manufacturer say PRI AR-15 6.8mm/.224 Valkyrie 15 Round Rifle Magazine is compatible with? The manufacturer suggests that PRI AR-15 6.8mm/.224 Valkyrie 15 Round Rifle Magazine is compatible with AR-15PRI 05-6086-15RD: AR-15 6.8mm/.224 Valkyrie 15 Round Rifle Magazine Black