Moriarti AR-15 5.56 NATO Modular Pistol Upper Assembly 6 in Black Anodized. 56 NATO Modular Pistol Upper Assemblyengineered for shooters who demand a compact accurate and highly maneuverable platform. Featuring a premium 4150 CMV barrel with a 1:7 twist this upper is designed to stabilize common 5.56 NATO ammunition and deliver excellent performance in a compact pistol configuration. The 6 in barrel is finished in QPQ nitride for exceptional corrosion resistance and durability threaded 1/2x28 for broad compatibility with muzzle brakes comps suppressors and included with an A2 flash hider. A forged 7075-T6 A3 flat-top upper receiver provides strength and precision alignment while the 5.5 in Hybrid MLOK handguard offers lightweight modularity for lights grips lasers and more. A .750 low-profile gas block and micro-length gas system ensure smooth cycling and reliability in short-barrel applications. This upper is ideal for compact AR-15 pistol builds CQB-style setups tactical training and range funall backed by Moriarti Arms quality craftsmanship. Specifications for Moriarti AR-15 5.56 NATO Modular Pistol Upper Assembly: Manufacturer: Moriarti Finish: Anodized Color: Black Fabric/Material: Aluminum Gun Make: AR Platform Features of Moriarti AR-15 5.56 NATO Modular Pistol Upper Assembly Muzzle Device: A2 flash hider with crush washer Feed Ramps: M4 feed ramps for reliable feeding Upper Receiver: 7075-T6 forged aluminum A3 flat top hardcoat anodized Compatibility: Fits virtually all standard AR-15 lowers; BCG & CH optional add-ons Package Contents: Moriarti AR-15 5.56 NATO Modular Pistol Upper Assembly Moriarti MAR-556-6-A2: AR-15 5.56 NATO Modular Pistol Upper Assembly 6 in Black Anodized