Hammerli Arms Tac R1, Semi-automatic, AR, 22 LR, 16.1 Threaded Barrel, Black, MFT Minimalist Stock, M-LOK Handguard, Front/Rear Flip Sights, 10Rd 576050010 The Walther Hammerli TAC R1 22 rifle offers the best precision, quality, and value of any .22 LR AR-Style rifle on the market. Featuring a 13" M-LOK handguard, flip up back-up sights, removable flash-hider, and ergonomic stock And grip, the TAC R1 22 rifle is the most versatile .22 rifle available. All of these features, in addition to the all-aluminum construction of it's receivers and handguard, set a new standard for performance and value.