Moriarti AR-15 5.56 Nato 16 M4 Carbine Upper Assembly with a 15 M-lok rail and triport muzzle brake is a product designed for AR-15 enthusiasts looking for a high-quality upper receiver assembly. This specific setup is designed to provide shooters with a reliable and versatile platform for various shooting activities, including target practice, competition shooting, and hunting. Specifications for Moriarti AR-15 16 inch 5.56 Nato Upper Receiver Assembly: Manufacturer: Moriarti Caliber: 5.56x45mm NATO Barrel Length: 16 in Barrel Profile: M4 Gas System Length: Carbine Length Barrel Twist Rate: 1-7 Threads per Inch: 1/2x28 Handguard Type: Free-Float Muzzle Device: Tri Port Muzzle Brake Finish: Hardcoat Anodized Color: Black Fabric/Material: 7075-T6 Aluminum Gas Block Journal Size-Diameter: .750 in Handguard Length: 15 in Gun Rail: M-LOK Gun Make: AR Platform Gun Model: AR-15 Barrel Material: 4150 CMV Steel Bolt Carrier Group Included: No Magazine Included: No Charging Handle Included: No Mount Type: M-LOK Package Contents: Moriarti AR-15 16 inch 5.56 Nato Upper Receiver Assembly