Built upon the Rock River Arms A4 billet upper receiver and forged A2 lower, the RRA 17 HMR Rifle is fronted by a precision-manufactured 41V50 CMV 18-inch barrel rifled with a 1:9 twist. The cycle of operation is managed by a gas impingement, delayed blowback system that delivers reliable cycling of 15.5- to 20-grain cartridges. Other key features include RRA’s NM Ultra Match two-stage trigger, a rear charging handle for convenient operation, ergonomic Magpul MOE grip, adjustable Magpul MOE SL-K six-position stock and RRA’s lightweight 15-inch free-float handguard with M-Lok compatibility. A 10-round magazine is included. MSRP: $1,300. Contact: www.rockriverarms.com