Ruger's Precision Rifle has Ruger's highly accurate, cold hammer-forged 4140 chrome-moly steel barrel with 5R Rifling at minimum bore and groove dimensions, minimum headspace and centralized chamber. It uses a medium contour (.75" at the muzzle) barrel with 5/8"-24 threads and a thread protector installed. The upper receiver and one-piece bolt are precision CNC-machined from pre-hardened 4140 chrome-moly steel to minimize distortion. The three-lug bolt with 70-degree throw features dual cocking cams and a smooth-running, full diameter bolt body. It has an oversized bolt handle for positive bolt manipulation with 5/16"-24 threads for easy replacement. The Ruger Marksman Adjustable trigger is externally adjustable with a pull weight range of 2.25- 5.0 lbs. Ruger's Precision MSR stock with QD sling attachment points features a bottom Picatinny rail, adjustable LOP, adjustable comb height, and soft rubber buttpad. The left-folding stock hinge is attached to an AR-style buffer tube and accepts any AR-style stock. It is equipped with a Samson Evolution keymod handguard and has an extended trigger-reach AR-style grip. It includes two 10-round Magpul PMAG magazines.