Product Features & Specifications Ruger 8532 AR-556 MPR 350 Legend 5+1 16.38" Threaded Barrel, Hard Coat Anodized 7075-T6 Aluminum, Magpul MOE SL Adjustable Stock, Elite 452 Two Stage AR-Trigger, Magpul MOE Grip, Optics Ready Ruger's AR-556 MPR rifle has a pistol-length gas system which provides smoother operation and reduces felt recoil. The matte black oxide chrome-plated bolt carrier inside diameter and chrome-plated gas key inside diameter provides exceptional resistance to hot gases. Its lower receiver is fitted with Magpul MOE grip and a Ruger Elite 452 two-stage AR-trigger which offers a smooth, crisp, 4.5 pound trigger pull. The flattop upper receiver is made from forged aerospace-grade 7075-T6 aluminum, and includes a forward assist, dust cover and brass deflector. Its handguard is free-floating for accuracy and features Magpul M-LOK attachment slots along the 3, 6 and 9 positions. The threaded, cold hammer-forged, 4140 chrome-moly steel barrel with ultra-precise rifling provides exceptional accuracy, longevity and easy cleaning. The barrel also provides M4 feed ramps which improves operational reliability, while the matte black nitride finish provides corrosion resistance. The AR-556 MPR has a Magpul MOE SL collapsible buttstock on the Mil-Spec buffer tube and includes one magazine. Brand Ruger Category Tactical Rifles Model AR-556 MPR Caliber 350 Legend Barrel Length Range 16" to 16.99" Gun Platform AR-Style Operating System Direct Impingement Stock Finish Group Black Capacity 5+1 Stock Material Synthetic Action Semi-Auto OAL 33.38"- 36.63" Hand Right Hand Sights Optic Ready Barrel Finish Matte Black Nitride Muzzle Muzzle Brake Twist 1:16" Magazine Type AR-15 Grips Black Magpul Receiver Material Aluminum Safety Manual Thumb Thread Pattern 1 / 2"-28 x 0.4" tpi Stock Description Adjustable Magpul SL Barrel Description Chrome Moly Barrel Length 16.38" Length of Pull 11.10"-14.40" Max Capacity 5 Receiver Finish Black Hard Coat Anodized Trigger Two-Stage Weight 6.60 lbs Stock Finish Black