The Radical Firearms 16" SOCOM 5.56mm 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.  Regardless if it’s your first or fiftieth, a Radical Firearms AR rifle backed by Radical Firearms Lifetime Warranty for as long as you own it will not disappoint!