Caliber: 450 Bushmaster - Stock: Flat Dark Earth Synthetic - Front Sight: Protected Blade - Rear Sight: Adjustable - Capacity: 4 - Thread Pattern: 11/16-24 - Barrel Length: 16.10 - Overall Length: 37 - 38.50 - Material: Stainless Steel - Finish: Matte Stainless - Barrel Feature: Ruger Precision Rifle® Hybrid Muzzle Brake - Length Of Pull: 12.75 - 14.25 - Twist: 1:16 RH - Weight: 6.2 lb. - Grooves: 6 - Features the Ruger Precision Rifle® Hybrid Muzzle Brake to effectively reduce recoil while minimizing noise and blast to the sides of the shooter (thread protector included). - The forward-mounted Picatinny rail allows for the mounting of modern optics like an intermediate eye relief scope (not included) for both eyes open sighting and super-fast target acquisition. - Also offers a built-in accurate sighting system with ghost ring adjustable rear aperture sight and a non-glare protected blade front sight. - 4-round detachable box magazine with push-forward magazine release just forward of the trigger guard. - Integral scope mounts machined directly on the solid-steel receiver provide a stable mounting surface for scope rings eliminating a potential source of looseness and inaccuracy in the field (scope rings included). - Soft rubber buttpad with buttpad spacers allows the rifle to be properly sized for different shooters or varying levels of outerwear (three 1/2 spacers included). - Free-floated cold hammer-forged barrel with ultra-precise rifling that provides exceptional accuracy longevity and easy cleaning. - Rugged and reliable with a glass-reinforced nylon trigger guard and magazine well. - Non-rotating Mauser-type controlled round feed extractor is the most positive case extraction system ever invented and features a fixed blade-type ejector that positively ejects the empty cases as the bolt is moved fully rearward. - Also includes: rugged one-piece stainless steel bolt; three-position safety; sling swivel studs.