A rimfire version of the Ruger Precision Rifle in a molded, 1-piece chassis of glass-filled nylon with adjustable buttstock and flat Picatinny bag rider for rear monopod. A molded-in window provides a tether point for your squeeze bag and a metal QD pocket to secure a sling. AR-Pattern pistol grip and reversible safety selector. Compatible with most AR-style grips and selectors. The 18" target barrel in .22 LR, .17 HMR or .22 WMR is cold hammer-forged from 1137 alloy steel threaded 1/2"-28. Oversized bolt handle (same as the Ruger Precision Rifle). Big-Gun bolt throw adjustment enables shooters to change from a rimfire 1-1/2" bolt throw to a short-action centerfire 3" bolt throw, reducing the chance of short-stroking your bolt in competition. Ruger Marksman Adjustable trigger is externally adjustable, with a trigger pull range of 2.25 to 5 pounds. A 15" aluminum free-float handguard is black hard-coat anodized with M-LOK slots on all four sides. Use Ruger BX-1 and JMX-1 magazines.