The Radical Firearms FP10.5-7.62X39HBAR -10RPR is an optics ready AR-15 pistol chambered in the popular 7.62x39MM cartridge. This is a fully Mil-Spec AR with precision machined 7075-T6 forged aluminum receivers with a Mil-Std M4 flat top upper. It starts with a 10.5" 4140 CMV Steel Barrel with an HBAR contour that is Melonite treated and threaded 5/8x24 with an A2 flash hider. Featuring a free float Radical Firearms 10" PRP handguard that has a full length picatinny top rail, it readily accepts Magpul M-LOK attachments. - CALIBER 7.62x39MM - MAGAZINE (1) 20rd capacity - BARREL 10.5" 4140 Chrome Moly Vanadium w/ A2 Flash Hider - HANDGUARD 10" RPR Free Float M-LOK Thin Rail - RECEIVER Forged 7075-T6 Aluminum - TRIGGER Mil-Spec - BRACE Mil-Spec Tube