Specifications: – Caliber 5.56 NATO (.223 REM) – Carbine length gas system – 16″ Barrel with a 1:7 twist rate – Overall length: 32.5 – 36″ – 6.09 LBS w/o magazine – Salt Bath Nitride MPI bolt carrier group – A2 Birdcage flash hider 1/2 x 28 – 7075 Forged A4 Flat top optics-ready upper receiver – 7075 Forged XM15-E2S™ lower receiver – Milspec trigger   Features: – MOE SL® Hand Guard, Carbine-Length – Magpul® PMAG® 30 AR/M4 GEN M2 MOE® – Magpul® CTR® Carbine Stock – Magpul® MOE® Grip – Magpul® MOE® Enhanced Polymer Trigger Guard – Detachable Carry Handle – F-Marked A2 Front Sight