Stag Arms is an American AR-platform manufacturer founded in 2003 and based in Cheyenne, Wyoming. The Stag 15 (AR-15) and Stag 10 (AR-10) are the primary rifle lines, built with 7075-T6 aluminum receivers, chrome-lined or nitride-treated barrels, and precision-machined bolt carrier groups. A notable feature is the availability of true mirror-image left-handed rifles with an ejection port, charging handle, and controls on the left side of the receiver. Rifles are offered in multiple calibers, barrel lengths, and stock configurations.