Featuring a wide selection of calibers, Scorpius Tactical offers barrels for the the AR15 and AR10 platforms perfect for building a rifle from the ground up or replacing a worn out piece. Calibers offered include 5.56, .223 wylde, 6.5 grendel, 7.62x39, .308, .300 BLACKOUT, and 9mm. We offer all the parts and components necessary to build the rifle you want, in the caliber of your choice! Check us out online at https://www.scorpiustactical.com/ or in Reno at 6370 MAE ANNE AVE #7