Absolutely Brand New in Box, Colt LE6920-OEM2 M4 AR-15. The Colt OEM2 offers a no Compromise solution for consumers to Build Their Own Customized rifles based on the proven Colt M4 Platform. Handguards, Buttstock, Trigger Guard, Magazine and Rear Sight have been omitted completely. The OEM2 is built with a Low Profile Gas Block and Without a Handguard Retaining Ring to allow for the use of most aftermarket Free Floating Handguards. Semi-Automatic, Caliber 5.56/.223, 16.1 Inch Chrome Lined Barrel with 1:7 Twist, Muzzle Brake, Lever Safety. All factory accessories included.