Rock River Arms LAR15 Entry Tactical is a basic model AR from the box simple and ready to shoot. It has a 16 inch chrome moly M4 Profiled barrel A2 flash hider Ergo Sure Grip pistol grip 6 position tactical carbine stock M4 handguard with double heat shields and fires 1 MOA at 100 yards. This rifle can be kept simple like the M4 that troops carry into combat or customized from muzzle brake to buttstock. Included with each rifle is one magazine LPS1 wipe RRA case manual and warranty.