Core15 Hardcore System X2
5.56 NATO or 6.5 Grendel (new 2016) cal., 16 or 18 (new 2016) in. fluted black Nitride finished or stainless steel (new 2016, 18 in. only) barrel, mid-length gas system, Lantac Dragon muzzle brake, Magpul Gen M3 20 or 30 shot PMAG, integral...