Davidson Defense Overrule 6-inch Pistol-Gas 1:7 .300 BLK AR-15 Freefloat M-Lok Handguard Pistol Upper Build Kit

Overrule 6-Inch Pistol-Gas 1-7 .300 BLK AR-15 Upper Build Kit with 7-Inch M-Lok Handguard and Pershing Flash Can

The Overrule 6-inch .300 Blackout AR-15 upper build kit is engineered for compact performance and versatility. This kit features a 6-inch .300 Blackout pistol barrel with 1-7 twist rate, constructed from steel with 5/8x24 thread pitch for .300 Blackout muzzle devices. The pistol-length gas system is complemented by a .750 micro low-profile gas block, ensuring reliable cycling. The included Pershing flash can muzzle device features Type III hard coat anodized finish. The 7075-T6 aluminum upper receiver includes M4 feed ramps and anodized finish for smooth operation and corrosion resistance. The 7-inch M-Lok handguard is made from 6061-T6 aluminum in black, providing ample attachment points for accessories and enhancing build adaptability. This upper build kit is suitable for gunsmiths who demand lightweight and efficient upper assemblies for compact AR-15 platforms.

Key Features

• 6-inch .300 Blackout pistol barrel with 1-7 twist rate
• Steel barrel construction with 5/8x24 thread pitch
• Pistol-length gas system with .750 micro low-profile gas block
• Pershing flash can muzzle device with Type III hard coat anodized finish
• 7075-T6 aluminum upper receiver with M4 feed ramps and anodized finish
• 7-inch M-Lok handguard made from 6061-T6 aluminum in black
• Pistol-length gas tube included
• Compact configuration for close-quarters applications
• Upper build kit includes barrel, gas block, gas tube, handguard, upper receiver, and muzzle device

Perfect For

• AR-15 pistol builders seeking compact .300 Blackout configurations
• Gunsmiths requiring lightweight and efficient upper assemblies
• Shooters who value close-quarters performance with .300 Blackout
• Builders prioritizing M-Lok handguards and flash can muzzle devices

6-Inch .300 Blackout Pistol Barrel with Pistol-Length Gas System

The 6-inch .300 Blackout pistol barrel is constructed from steel with 1-7 twist rate for compact performance. The 1-7 twist rate stabilizes both subsonic and supersonic .300 Blackout ammunition effectively. The 5/8x24 thread pitch accommodates standard .300 Blackout muzzle devices including suppressors and flash cans. The pistol-length gas system ensures reliable cycling in this compact configuration. The .750 micro low-profile gas block delivers dependable gas operation beneath the handguard. The pistol-length gas tube completes the gas system for proper bolt carrier group cycling.

Pershing Flash Can Muzzle Device

The Pershing flash can muzzle device features Type III hard coat anodized finish for durability and wear resistance. The flash can design directs blast forward away from the shooter, reducing side blast common in short-barrel configurations. The 5/8x24 threading ensures secure attachment to the .300 Blackout barrel. This muzzle device enhances the shooting experience in compact AR-15 pistol platforms.

7075-T6 Upper Receiver and 7-Inch M-Lok Handguard

The upper receiver is made from durable 7075-T6 aluminum with M4 feed ramps for reliable feeding and smooth operation. The anodized finish provides corrosion resistance and wear protection. The 7-inch M-Lok handguard is made from 6061-T6 aluminum in black, providing ample attachment points for lights, grips, and accessories. The M-Lok system allows modular accessory mounting without adding rail weight. The handguard length extends beyond the 6-inch barrel, providing forward hand placement and accessory mounting space.

Compact Upper Build Kit

This upper build kit delivers lightweight and efficient performance for compact AR-15 platforms. The kit includes all necessary components for upper receiver assembly except bolt carrier group and charging handle, including 6-inch .300 Blackout barrel, pistol-length gas system components, 7-inch M-Lok handguard, 7075-T6 upper receiver, and Pershing flash can. This build kit is suitable for gunsmiths who demand compact performance and versatility in .300 Blackout caliber.

Follow safe handling practices and manufacturer instructions at all times.

Ensure compliance with all applicable laws.

Verify proper assembly and gas system function before use.

Confirm secure installation of all components before operation.