Caliber: 223 Rem./5.56mm NATO. Similar to Superlight SRC. Barrel: 16”, M4 profile, chrome lined with A2 flash suppressor, 4150 CMV 11595E steel w/M4 feed ramps. 1:9 RH twist rifling. Gas-impingement system, Carpenter 158 steel bolt. Flattop-type upper receiver with A4 detachable carry handle. Rifle-length heat-shielded handguards. A2 black plastic grip. Rear Sight: A4 dual-aperture elevation and windage adjustable for 300-600m. Front Sight: adjustable-height square post in A2 standard base. Six-position telescoping buttstock, A2 black plastic grip. One 30-round magazine. Comes with hard-plastic gun case with black web sling. Weight: 7.75 lbs. Length: 32.375” to 36.125”. Model R16M4DA4T.