The Radical Firearms 10.5′” HBAR 7.63X39 AR pistol uses MIL-STD Upper and lower receivers along with their 10′” RPR free float rail system for increase accuracy'” keeping your hands cool'” and giving you plenty of room for accessories.
Radical Firearms RF-15, Semi-automatic, AR Pistol, 7.62X39, 10.5″ HBAR Threaded Barrel, Anodized FInish, Black, Carbine Length Gas System, A2 Flash Hider, MFT Engage V2 Grip, 10″ M-LOK Free Float Handguard, 20 Rounds, 1 Magazine RF00160