.300 AAC Blackout or 5.56 NATO/.223 Wylde chamber, 16 in. mid-length barrel with A2 flash hider, Gen 2 enhanced series handguard of choice, M4E1 upper, billet trigger guard, Magpul MOE grip, Magpul STR stock, black or FDE finish. Disc. 2018.
5.56 NATO cal., mid-length gas system, 16 in. barrel with A2 flash hider, 30 shot Magpul PMAG, Magpul MBUS rear and A2 front sights, M4 collapsible stock, A2 pistol grip, M4 upper and Gen 2 lower receiver with flared magwell, M4 mid-length handguard with heat shield, hardcoat anodized black finish. Mfg. 2016-2018.
5.56 NATO cal., carbine length gas system, low profile gas block, 16 in. M4 profile barrel, M4 collapsible stock, A2 pistol grip, C.O.P. M4 upper receiver with rail panels, Gen 2 lower with flared magwell, black anodized finish. Mfg. 2016-2018.
.308 Win. cal., low profile gas block, 16, 18, or 20 in. chrome moly or stainless steel barrel, A2 birdcage flash hider, 20 shot PMAG, custom integrated M5E1 Enhanced Series upper receiver, Gen 2 lower with flared magwell, Gen 2 Enhanced Series handguard of choice, Magpul STR (16 in. barrel only) or Magpul PRS (18 or 20 in. barrel only) stock, Magpul MOE grip, black or FDE finish. Disc.
6.5 Creedmoor cal., 18, 20, or 22 in. stainless steel mid-length barrel, A2 birdcage flash hider, 20 shot PMAG, Magpul PRS Gen 3 stock, Magpul MOE grip, custom integrated M5E1 Enhanced Series upper receiver, Gen 2 lower with flared magwell, Gen 2 Enhanced Series handguard of choice, low profile gas block, black or FDE finish. Disc.