5.56 NATO cal., GPO, carbine length gas system, 14.7 or 16.1 in. CHF match grade barrel, A2 flash hider (permanently attached on 14.7 in. barrel), 30 shot mag., Skirmish BUIS, 6-pos. VLTOR EMOD (disc. 2016), Magpul MOE (disc. 2016), or LWRCI compact (new 2017) stock, H2 buffer, Magpul MIAD (disc. 2016), Magpul MOE+ (mfg. 2017-18), or LWRCI SnakeSkin pistol grip with sight tool/battery storage (mfg. 2018-2021), or ultra combat (new 2022) grip, fully ambi lower receiver, ambi sling mount, ambi charging handle, 9 in. quad rail w/Picatinny rail sections, three polymer Rail Skins and Mil-Spec endplate, black anodized finish or FDE, OD Green, Patriot Brown, or Tungsten Gray Cerakote finish, 7.3 lbs.