The RESOLUTE comes chambered in 5.56x45mm, one of the most prolific calibers in the world, and for good reason. 5.56 and its counterpart .223 Rem, have seen service with militaries, hunters, and recreational shooters for decades. Features EML handguard, full length M-LOK slots on both sides and the bottom of the handguard as well as M-LOK between the top picatinny rail sections; ZEROED parts including: pistol grip, drop-in trigger, 60/90 degree ambi safety, ambi mag catch, extended mag release button, ambi charging handle, bolt catch, polymer dust cover and muzzle brake. Includes Magpul 30rd PMAG.