Noveske Gen 4, Semi-automatic, AR, 223REMINGTON/556NATO, 16 Barrel, M-Lok Handguard, Green, Magpul MOE SL Stock, Magpul MBUS Pro Sights, 30 Rounds 02000563-BG This rifle features a Gen 4 precision machined billet upper receiver with extended feed ramp and anti-rotation interface with the handguard.