The One Horse OH-15 Complete AR-15 Pistol is chambered in 5.56mm NATO and features a 10.5-inch barrel. This semi-auto pistol comes with a 30-round magazine and a KAK brace, making it a versatile option for various applications.Key FeaturesIncluded Magazine: Ships with a single 30-round magazine.Barrel Length: Fitted with a 10.5-inch barrel for compact performance.Handguard Length: Equipped with a 9.25-inch M-LOK handguard for accessory attachment.Safety Type: Features a thumb safety for added security.