The Radical Firearms RF-15 SOCOM RPR AR rifle uses MIL-STD Upper and lower receivers along with Radical Firearms 15 RPR free float rail system for increased accuracy keeping your hands cool and giving you plenty of room for accessories. Regardless if its your first or fiftieth a Radical Firearms AR rifle will not disappoint. Radical Firearms Forged Milspec Rifle Semi-automatic 556mm 16 Socom Contour Barrel 1.7 Twist Black Finish Mft Minimalist Stock 1 Magazine 30rd 15 Rpr Mlok Handguard Fr16-5.56soc-15rpr"/\