“Bushmaster M4 Flat Top AR15 Complete Upper Assembly – Black | 5.56NATO | 16″” Barrel | A2 Handguard | A2 Flash Hider”

“Specifications: – Caliber 5.56 NATO (.223 REM) -16″” Barrel with a 1:7 Twist Rate – M4 Style Handguard  – Flip-UP Rear Sight  – Salt Bath Nitride Bolt Carrier Group -MPI Tested Bolt – A2 Birdcage Flash Hider 1/2 x 28    Features:  -The gas system is carbine length – 7075 Forged A4 Flat top – F-Marked sight base for sight alignment, providing correct carbine sight alignment   Proudly Made In U.S.A. “

Restricted States: