The NLX 5.56 GFK is built on our 7075 aluminum forgings and hard coat anodized to perfection. With an ambidextrous charging handle and safety, our DLC bolt carrier, and NLX Hi-Helix muzzle device the GFK will be your go to, whether you're using it for sporting, hunting, or defense. 100% USA Made Products. - CALIBER .223 REM/5.56MM NATO - MAGAZINE (1) 30rd capacity PMAG G3 - BARREL 16", 1:7 Twist - MUZZLE NLX Hi-Helix Flash Hider - HANDGUARD 15" NLX M-LOK - TRIGGER Mil-Spec - STOCK, GRIP B5 Bravo w/ QD Port