Davidson Defense Grazer 20-inch Rifle-Gas 1:8 6.5 Creedmoor AR-10 M-Lok Rifle Complete Upper Build

Grazer 20-Inch 6.5 Creedmoor AR-10 Complete Upper Build

The Grazer is a precision-focused complete upper assembly built on the LR-308 platform for long-range shooting and tactical applications. This upper combines a 20-inch heavy profile barrel with a 1:8 twist rate optimized for 6.5 Creedmoor, paired with a free-float M-LOK handguard and low-profile gas system for consistent accuracy downrange.

Key Features

• 20-inch heavy profile 4150 CrMoV barrel with straight fluting and 1:8 twist rate for 6.5 Creedmoor
• LR-308 billet upper receiver with Type III hardcoat black anodize finish
• 19-inch Crest Series free-float M-LOK handguard for accessory mounting and thermal isolation
• Rifle-length gas system with low-profile gas block and stainless steel gas tube
• Recoil Technologies nitride bolt carrier group compatible with .308 Winchester, 6.5 Creedmoor, and .243 Winchester
• Tanker style 3-port muzzle brake with 5/8x24 thread pitch
• LR-308 aluminum charging handle included

Perfect For

• Long-range precision shooters building custom AR-10 configurations
• Tactical rifle builds requiring modular accessory mounting
• Shooters transitioning from AR-15 to larger caliber platforms
• Precision hunting applications at extended distances

Precision-Focused Long-Range Design

The 20-inch heavy profile barrel provides the velocity and accuracy needed for 6.5 Creedmoor performance at distance. The 1:8 twist rate stabilizes a wide range of bullet weights, from lighter target rounds to heavier hunting loads. The straight fluting reduces weight while maintaining rigidity, and the 4150 CrMoV construction ensures durability through extended shooting sessions.

Free-Float Handguard and M-LOK Ecosystem

The 19-inch Crest Series handguard floats independently from the barrel, eliminating contact that can shift point of impact. M-LOK attachment points allow mounting of optics, lights, and other accessories without tools. The low-profile design maintains a clean sight picture and works seamlessly with standard AR-10 optic mounts.

Optimized Gas System for Reliability

The rifle-length gas system balances reliability with recoil management. The low-profile gas block minimizes sight obstruction and integrates cleanly with the handguard. The stainless steel gas tube resists corrosion and maintains consistent cycling across ammunition variations.

Recoil Technologies Bolt Carrier Group

The nitride-finished bolt carrier group cycles .308 Winchester, 6.5 Creedmoor, and .243 Winchester ammunition. The nitride finish provides corrosion resistance and reduces maintenance requirements. The group is fully compatible with standard LR-308 lower receivers.

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