HEXMAG Hexview Series 2 223 Remington/5.56mm NATO Rifle Magazine - 30 Rounds Transparent polymer magazines that hold up under pressure. The clear advantage allows visibility of remaining rounds with all the same great benefits of the HEXMAG features. Features CALIBERS: .223/5.56x45mm, .300AAC Blackout, RIFLES: AR15 / M4 and other MSR Compatible Rifle Systems CAPACITY: 30 CONSTRUCTION: HEXVIEW(TM) Advanced Composite COLORS: Clear. Can be assembled custom with HEXID(R) colors Made in the U.S.A. LIFETIME GUARANTEE