Features: - Barrel: - Chambered in 5.56 NATO - Salt Bath Nitride Chamber Bore & Finish - 14.5 M4 Contour Barrel - Threaded Muzzle Crown - Phantom Flash Hider Pinned & Welded - 1/7-Inch Twist - Low Profile Gas Block - Carbine Length Gas System - FSR 13 Rail System - Upper Receiver: - Franklin Armory Libertas Proprietary Billet Upper Receiver - Machined From 7075-T6 Aluminum - Hard Coat Type III Anodized Black Black Desert Smoke or Olive Drab Green - Full Picatinny Rail - MBUS Front & Rear Sights - Forward Assist - Salt Bath Nitride Bolt Carrier Group - Lower Receiver: - Franklin Armory Libertas Proprietary Billet Lower Receiver - Machined From 7075-T6 Aluminum - Hard Coat Type III Anodized Black Desert Smoke or Olive Drab Green - Flared Magazine Well for Quick Magazine Changes - Ambidextrous Push Button QD Sling Mounts - Integral Cold Weather Trigger Guard - Serrated Memory Index Point for Shooting Finger - Textured Front Area for Offhand Grip - Specialized Tension Screw - Eliminates Upper/Lower Play - Franklin Armory Factory Custom Tuned Trigger - Ergo Ambi Sure Grip - Magazine: - Magpul Pmag P30 - Anti-Tilt Follower - Stock: - Magpul CTR Stock - Snag Free Design - Friction Lock Included - Reversible Push Button QD Sling Mounts