This is a CMMG AR known as the Endeavor 200 chambered in 6MM ARC, model 60A869B.
CMMG's ENDEAVOR line of rifles are now available in Hornady's new 6mm ARC (Advanced Rifle Cartridge). Designed for superior long-range accuracy" the ENDEAVOR line features a 20-inch barrel so that you can squeeze out every drop of ballistic performance from this exciting new caliber. Each rifle ships with one 10-round magazine.
Features:
CALIBER: 6mm ARC
BARREL: 20, 1:7.5 twist, 6.5mm ARC, MT 416SS, SBN;MUZZLE: MUZZLE: SV Brake, threaded 5/8-24;GAS PORT LOCATION: Rifle Length;RECEIVER: Forged 7075-T6 AL M4 type upper, AR15 type lower;HAND GUARD: CMMG RML15 M-Lok hand guard;FINISH: Hard Coat Anodized Receivers and Hand Guard;CHARGING HANDLE: CMMG Mil-Spec;PISTOL GRIP: Magpul MOE;BUTT STOCK: Magpul MOE Rifle Stock;TRIGGER: CMMG Single stage mil-spec style trigger;TRIGGER GUARD: Magpul MOE;SAFETY SELECTOR: CMMG Mil-Spec;MAGAZINE: 10rd;WEIGHT: 7lbs 14oz(unloaded);LENGTH: 39.9