Radical Firearms FR16-7.62X39HBAR-15RPR: The Radical Firearms 16\" Heavy Profile 7.62x39 AR rifle uses MIL-STD Upper and lower receivers along with our 15\" RPR free float rail system for increased accuracy, keeping your hands cool, and giving you plenty of room for accessories. This rifle is chambered in the hard-hitting, ever plentiful, and inexpensive 7.62x39 caliber. 15\" free-floated handguard is extremely lightweight yet very stable and accepts all M-Lok attachments. Radical firearms are known for their toughness and value. Ships with a 10-round magazine but accepts all AR-15 7.62 20 and 30-round mags as well. Regardless of whether this is your first or fiftieth, a Radical Firearms AR rifle will not disappoint!