FEATURES:-.223/5.56MM Nato-18"cold hammer forged barrel chrome moly vanadium steel-1:7" twist-1/2 x 28 TPI-7075-T6 aluminum lower & upper receiver type III hard coat anodized-Geissele automatics super dynamic 3 gun trigger-Pinned low profile gas block-Chrome lined bolt carrier group properly staked gas key-H buffer-DD MFR XS 15.0 handguard type III hard coat anodized-DD buttstock glass filled polymer with soft touch overmolding-DD pistol grip glass filled polymer with soft touch overmolding-34 3/4" - 37 7/8"" overall length-Made in the USA