5.56 NATO cal., GIO, 16 in. Government contour M4 barrel with A2 flash hider, threaded muzzle, M4 feed ramps, parkerized finish, charging handle, carbine length handguard with single heat shield, forged aluminum lower and A3 flat-top upper receiver, right hand ejection, 6-position collapsible buttstock, single rail gas block, 30 shot mag., standard sling, includes hard rifle case. Disc. late 2014.
5.56 NATO cal., GIO, 16 in. Government contour barrel with A2 flash hider, Troy Industries 7, 10, or 13.8 in. free float quad rails, M4 feed ramps, charging handle, forged aluminum lower receiver and A3 flat-top upper, ejection port cover and round forward assist, right hand ejection, 6-position collapsible buttstock, carbine length handguard and single heat shield (13.8 in. model only), black or FDE parkerized finish. Disc. late 2014.
5.56 NATO cal., GIO, 16 in. Government contour barrel with A2 flash hider, threaded muzzle, parkerized finish, M4 feed ramps, charging handle, Samson 7 in. free float with add-on rails, forged aluminum lower receiver and forged A3 flat-top upper, M4 collapsible buttstock, two 30 shot mags., right hand ejection, includes hard rifle case. Disc. late 2014.
5.56 NATO cal., GIO, 16 in. M4 Govt. contour barrel with A2 flash hider, parkerized finish, M4 feed ramps, Ergo Z free float rail, Ergo vertical forward grip, Ergo ambidextrous pistol grip in Zombie Green, Ergo Zombie Green magwell cover, Ergo Zombie Green rail covers and ladder rail covers, Zombie Hunter dust cover, Zombie Hunter magazine catch, Zombie Hunter charging handle, front and rear flip-up sights, Ergo F93 eight position stock, BullDog Zombie coffin soft rifle case. Disc. late 2014.
5.56 NATO cal., GIO, 16 in. fluted barrel, parkerized finish, M4 feed ramps, two-stage match trigger, A3 flat-top upper, Midwest Industries flash hider/impact device, Midwest Industries free float quad rail, gas block with flip-up front and rear sights, Magpul ACS stock, Magpul OD Green 30 shot mag., Magpul enhanced aluminum trigger guard, Hogue OD Green pistol grip. Disc. late 2014.
5.56 NATO cal., GIO, elite version of Tac Defender model, 16 in. M4 barrel, parkerized finish, M4 feed ramps, Troy 7 in. free float quad rail in FDE, Troy rail covers in FDE, single rail gas block, YHM (disc.) or Troy gas block mounted flip-up front sight, YHM (disc.) or Troy flip-up rear sight, Vortex (disc.) or Troy Medieval flash suppressor, Magpul trigger guard in FDE, Troy BattleAx pistol grip in FDE, Troy BattleAx CQB lightweight stock in FDE, Troy 30 shot Battlemag, Troy rifle sling, charging handle with tactical latch, two-stage match trigger. Disc. late 2014.