Davidson Defense Warden Duty 10.5-inch Pistol-Gas 1:8 6.5 Grendel AR-15 Freefloat Keymod Handguard Pistol Upper Build Kit

Warden Duty 10.5-Inch 6.5 Grendel AR-15 Pistol Upper Build Kit

This upper build kit combines a 10.5-inch 4150 CrMoV barrel with a Trinity Force ECHO 10-inch Keymod handguard, designed for compact 6.5 Grendel builds. The kit includes an anodized 7075-T6 aluminum upper receiver, micro low-profile gas block, pistol-length gas tube, GI birdcage flash hider, and forward assist assembly. BCG and charging handle are not included.

Key Features

• 10.5-inch HBAR barrel, 4150 CrMoV steel with phosphate finish, 1:8 twist rate
• Trinity Force ECHO 10-inch Keymod handguard, aluminum construction, slim profile
• Anodized AR-15 upper receiver with M4 feed ramps, 7075-T6 aluminum
• Pistol-length gas system with stainless gas tube and .750 micro low-profile gas block
• 5/8x24 threaded barrel with GI birdcage flash hider
• Forward assist assembly included

Perfect For

• Compact 6.5 Grendel builds requiring pistol-length gas systems
• Shooters prioritizing accessory compatibility through Keymod attachment points
• Builders seeking HBAR profile barrels for enhanced rigidity
• Configurations demanding lightweight freefloat handguards

6.5 Grendel Chambering

6.5 Grendel offers extended effective range and superior ballistic performance compared to standard 5.56 NATO, making it well suited for precision applications where barrel length constraints apply.

Trinity Force ECHO Keymod Handguard

The 10-inch Trinity Force ECHO Keymod handguard provides a slim aluminum profile with modular Keymod slots for direct accessory mounting. The freefloat design isolates the barrel from external pressure, supporting accuracy in compact upper configurations.

Pistol-Length Gas System

This kit uses a pistol-length gas system with a stainless gas tube and .750 micro low-profile gas block positioned beneath the handguard. The pistol-length configuration is optimized for the 10.5-inch barrel length.

Compatibility and Assembly

This upper build kit is compatible with standard AR-15 lower receivers. All components use mil-spec dimensions and threading, including the 5/8x24 TPI muzzle threads matching the included GI birdcage flash hider.

BCG and charging handle are not included. Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws.