Heavy-contour (.850" at the muzzle) barrel features a Ruger Precision Rifle Hybrid Muzzle Brake Patented multi-magazine interface functions interchangeably with AICS and M110/SR-25/DPMS/Magpul-style magazines Ruger Marksman Adjustable trigger is externally adjustable, with a trigger pull range of 2.25 to 5 pounds In-line recoil path manages recoil directly from the rear of the receiver to the buttstock Buttstock allows for easy, intuitive and secure adjustment to conform to any shooter or style Cold hammer-forged, chrome-moly steel barrel with 5R Rifling 15" aluminum free-float handguard is black hard-coat anodized aluminum and features Magpul M-LOK slots on all four sides Ambidextrous manual safety for left- or right-handed lever manipulation 20 MOA Picatinny rail secured with # 8-40 screws Three-lug bolt with 70 degree throw features dual cocking cams for smooth-running Magazine well front is contoured for a positive grip when bracing against shooting supports