Moriarti Upper Receiver Stripped AR-15 .300 Blackout 10.5 inch Barrel Medium Profile Pistol Length 1x7 Twist 5/8X24 Thread M-LOK Handguard Mini Shroud. 5 in Pistol Upper Assembly / Mlok / Shroud is a top-of-the-line assembly designed for the AR-15 rifle platform. It features a 10.5-inch barrel that is chambered in the 300 Blackout round. This powerful cartridge is known for its efficiency and versatility capable of delivering both super and subsonic rounds effectively. Specifications for Moriarti AR-15 10.5 inch .300 Blackout Upper Receiver Stripped: Manufacturer: Moriarti Color: Black Finish: Hardcoat Anodized Fabric/Material: 7075-T6 Aluminum Caliber: .300 AAC Blackout Gun Make: AR Platform Gun Model: AR-15 Condition: New Bolt Carrier Group Included: No Charging Handle Included: No Gas Block Journal Size-Diameter: .750 in Handguard Type: Free-Float Barrel Twist Rate: 1-7 Threads per Inch: 5/8x24 Barrel Profile: Medium Barrel Length: 10.5 in Barrel Material: 4150 CMV Steel Muzzle Device: Reverse Thread Mini Shroud Handguard Length: 10 in Features of Moriarti AR-15 10.5 inch .300 Blackout Upper Receiver Stripped The Pistol Upper Assembly is designed with a 1:7 twist rate to stabilize the heavier rounds associated with the 300 Blackout. The Shroud helps in managing heat and reducing muzzle rise during shooting. It often enhances the aesthetic of the firearm too. Lightweight Minimalist design. Package Contents: Moriarti AR-15 10.5 inch .300 Blackout Upper Receiver Stripped What firearm models does the manufacturer say Moriarti AR-15 10.5 inch .300 Blackout Upper Receiver Stripped is compatible with? The manufacturer says that Moriarti AR-15 10.5 inch .300 Blackout Upper Receiver Stripped is compatible with AR-15Moriarti MAR-300-10-SHRD: Upper Receiver Stripped AR-15 .300 Blackout 10.5 inch Barrel Medium Profile Pistol Length 1x7 Twist 5/8X24 Thread M-LOK Handguard Mini Shroud Hardcoat Anodized Black