.223 Rem./5.56 NATO or .300 AAC Blackout (new 2020) cal., GIO, 7 1/2 (5.56 NATO cal. mfg. 2019 only, .300 AAC Blackout cal., new 2020) or 8 1/2 (5.56 NATO cal., new 2020) in. barrel with black Nitride finish, pistol length gas system, A2 flash hider, 30 shot PMAG, Mil-Spec forged receivers, SBA3 brace, CORE 7 in. M-LOK rail, Ergo SureGrip pistol grip, bullet pictogram safety and laser engraved T-markings, beveled magwell, M16 BCG, V2 charging handle, Type III Class II hardcoat anodized black finish. New 2019.
5.56 NATO cal., GIO, 16 in. barrel w/A2 flash hider, forged receivers, A2 front sight block, black furniture, Tapco 6-position adj. stock, M4-style handguard, flat-top Picatinny rail, marked GTO near gas block, matte black finish or custom colors also available, 5.9 lbs. Mfg. 2011-2018.
5.56 NATO cal., similar to Core15 MOE Mid-Length rifle, except has GPO, Magpul MOE handguard, MOE Black or Desert Tan (mfg. 2012 only) hardware, 6.9 lbs. Mfg. 2012-2014.
5.56 NATO cal., GPO, similar to Core15 Tac M4 Rifle, except has monolithic Melonite coated BCG, Picatinny rail flat-top gas block, and Magpul MOE MBUS sights, 6.2 lbs. Mfg. 2012-2016.
5.56 NATO cal., GPO, similar to Core15 TAC Mid-Length rifle, except has adjustable gas settings, Picatinny flat-top gas block, 8 1/2 lbs. Mfg. 2012-2014.
5.56 NATO or 6.5 Grendel (new 2016) cal., GIO, 16 or 18 (new 2016) in. fluted black Nitride finished or stainless steel (new 2016, 18 in. only) barrel, low profile gas block, Lantac Dragon muzzle brake (disc.) or CORE muzzle brake, Magpul Gen M3 20 or 30 shot PMAG or 25 shot ASC 6.5 Grendel mag., heavily beveled and relieved magwell, billet machined serial matched receiver set, CMC Tactical two-stage trigger, integral oversized trigger guard, Magpul MBUS Pro sights, Magpul ACS 6-pos. stock, CORE 15 in. free float KeyMod handguard, black Hogue rubber grip, NiB BCG, Battle Arms enhanced pivot and takedown pin set, Sniper Grey Cerakote finish. Mfg. 2015-2020.
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 oversized trigger, Magpul MBUS Pro sights, Magpul UBR collapsible stock, 15 in. aluminum KeyMod handguard, black Hogue rubber grip, ambi safety, includes Leupold MK6 1x16x20 scope w/mount and adj. Atlas BT10 Bipod w/1913 Picatinny rail mount, H2 buffer, Sniper Grey Cerakote finish. Mfg. 2015-2018.
5.56 NATO or 6.5 Grendel (new 2016) cal., GIO, 18 or 20 (new 2016) in. fluted black Nitride finished or stainless steel (new 2016, 20 in. only) barrel, rifle length gas system, low profile gas block, Lantac Dragon muzzle brake, Magpul Gen M3 20 or 30 shot PMAG, integral oversized trigger guard, Magpul MBUS Pro sights, Magpul UBR collapsible stock, 15 in. KeyMod handguard, black Hogue rubber grip, ambi safety, includes Leupold MK6 3x18x44 scope w/mount, adj. Atlas BT10 bipod w/1913 Picatinny rail mount, Sniper Grey Cerakote finish. Mfg. 2015-2018.