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