Description: The venerable brand brings the M4 Patrolman's™ rifle Flat Top with the addition of a Flip-Up Rear sight. Perfected for competition, home defense, and recreational shooting.  Specifications: - Caliber 5.56 NATO (.223 REM) -16" Barrel with a 1:7 Twist Rate - Overall length: 32.5 - 36"  - 6.09 LBS w/o Magazine  - M4 Style Handguard  - Flip-UP Rear Sight  - Salt Bath Nitride MPI Bolt Carrier Group - A2 Birdcage Flash Hider 1/2 x 28    Features:  - Equipped with a Bushmaster™ 30 Round Aluminum Magazine - Trigger assembly is mil-spec -The gas system is carbine length - 6 Position collapsible stock for ease of adjustment and precise fit - 7075 Forged A4 Flat top, with detachable carry handle - F-Marked sight base for sight alignment, providing correct carbine sight alignment   Proudly Made In U.S.A.