<p>Colt Firearms CRL-20CA Pro Comp Rifle 308 Winchester has a 20 Inch Barrel with Magpul PRS and Adjustable Stock Black. The 10 Round California Compliant Suitable ammunition is factory-loaded SAAMI-Spec .308 Winchester caliber ammunition and NATO-stamped 7.62x51mm ammunition with 125 grain to 200 grain bullets. The Colt Competition Rifle has a gas-operated, direct-impingement system and CNC machined and precision-fitted receiver with 18 slot Picatinny rail on flat-top upper receiver. Also features a Colt Competition charging handle with extended tactical latch and Geissele two stage match trigger (super semi-automatic enhanced). Match bolt and bolt carrier. Match grade, air gaged, polished 416 stainless steel barrel. Button rifled, 6-groove with 1:10 inch right hand twist.</p>