The BC-15 features a standard flat top design with a 7075 forged aluminum construction for extreme toughness and modularity allowing for easy customization while maintaining excellent reliability. This model is chambered in 5.56x45mm NATO and includes one 30-round magazine. BC-15 | 5.56 NATO Complete Pistol w/ 30rd Magazine | 7.5" Parkerized Barrel | Pistol Gas System | 1:7 Twist | Forged Lower | MLOK Split Rail