Current AR-15 style firearm manufacturer established in 1980, located in Leander, TX.


6.5 Grendel cal., 18 in. barrel, LaRue TranQuilo muzzle brake, 5 or 17 shot mag., LaRue MBT-2S trigger, 13 in. handguard, includes LT-104 30mm scope mount, FDE finish, 7 lbs. 13 oz.
5.56 NATO, 6mm ARC, or 6.5 Grendel cal., DI, 16.1 or 18 in. medium weight contour barrel, threaded muzzle, mid-length gas tube, M4 feed ramps, LaRue MBT trigger, LaRue Rat stock, billet match grade receivers with hard anodized FDE finish, full floating upper handguard with M-LOK, includes high impact polymer case. New 2022.
5.56 NATO cal., GIO, 16.1 in. barrel, SureFire muzzle brake, FDE KG GunKote finish, "COSTA LUDUS" logo engraved on left side of receiver, black parts and rail covers, first 500 units are match numbered on the upper and lower. Mfg. 2013-2015.
7.62 NATO cal., AR-15 style, GIO w/PST (Port Selector Technology), 16 in. heavy barrel, LaRue M308 TranQuilo muzzle brake, 1/10 twist, three 20 round mags., FDE Cerakote finish w/select black parts and GAP rail covers. Approx. 125 mfg. Disc.
5.56 NATO (new 2011) or .308 Win./7.62 NATO cal., AR-15 style, GIO, 16.1, 18, or 20 in. barrel, A2 flash hider or TranQuilo muzzle device (new 2020), 20 shot box mag., flared magwell, Troy front and optional BUIS rear sight, A2 fixed (20 in. barrel only) or Retract Action Trigger (R.A.T.) stock, A-PEG grip, adj. gas block, detachable side rails, Mil-Std 1913 one-piece upper rail, black anodized finish, approx. 10 lbs.
5.56 NATO or .308 Win./7.62 NATO (new 2013) cal., GIO, 16.1 or 18 in. contoured stainless steel barrel, A2 flash hider or LaRue TranQuilo muzzle device (new 2021), 30 shot mag., 6-position Magpul (disc.) or LaRue R.A.T. stock, A-PEG grip, skeletonized handguard, quad rail forend, charging lever, forward assist, Geissele two-stage (disc. 2022) or LaRue MBT (new 2023) trigger, black phosphate finish, approx. 6 1/2 lbs. New mid-2011.
5.56 NATO, 7.62 NATO, 6.5 Creedmoor, or .260 Rem. cal., DI w/LaRue PST port selector, 16.1, 18, 20, or 22 (6.5 Creedmoor/.260 Rem., disc. 2021) in. threaded free float barrel, TranQuilo muzzle device, 20 (7.62) or 30 (5.56) shot mag., LaRue MBT trigger, 6-pos. Retract Action Trigger (R.A.T.) stock, adj. gas block, billet aluminum upper and lower receivers, 3 Mil-Std 1913 rail sections. New 2014.
6.5 Creedmoor, .308 Win., .260 Rem., .243 Win., or .22-250 Rem. cal., billet short action, 20 (.308 Win.), 23 (6.5 Creedmoor, .260 Rem., or .243 Win.), or 26 (.22-250 Rem.) in. match grade barrel, threaded muzzle, 5 round steel mag., accepts AICS pattern mags., Timney trigger, aluminum chassis, LaRue R.A.T. stock on 6-pos. folding M4 stock ext., A-PEG grip, release button, tool-less QD full free floating M-LOK handguard, set of three RISR 2.0 risers, includes LaRue Torque wrench and action bar, 10 lbs. New 2023.
5.56 NATO cal., AR-15 style, GIO w/PST (Port Selector Technology), 16 in. barrel, LaRue M556 TranQuilo muzzle brake, 1:8 twist, two 30 shot mags., black LaRue MBT trigger, UDE LaRue R.A.T. stock and A-PEG pistol grip, UDE GAP rail covers and index clips, UDE finish w/select black part. Approx. 125 mfg. numbered 001-125. Disc.