Bushmaster M4 Patrolman's Flat TopCA AR15 Rifle Black 5.56NATO 16" Barrel M4 Handguard A2 Flash Hider M4 Collapsible Stock FlipUp Rear Sight Fixed 10rd Mag CA Compliant

Specifications: - Caliber 5.56 NATO (.223 REM) -16" Barrel with a 1:7 Twist Rate - Overall length: 32.5 - 36"  - M4 Style Handguard with Detachable Carry Handle - Salt Bath Nitride MPI Bolt Carrier Group - A2 Birdcage Flash Hider 1/2 x 28    Features:  - Equipped with a DFM® 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 Flip Up Rear Sight  - F-Marked sight base for sight alignment, providing correct carbine sight alignment  This is a California Compliant Model