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

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

The Outcast delivers a precision-ready upper assembly built around a heavy 20-inch 6.5 Creedmoor barrel with a 1:8 twist rate, purpose-designed for long-range accuracy. This complete upper includes everything you need except the lower receiver: a DPMS-pattern billet upper receiver, freefloat M-Lok handguard, rifle-length gas system, nitride bolt carrier group, and charging handle. The heavy barrel profile with straight fluting balances thermal stability with weight management, while the parkerized finish protects against corrosion.

Key Features

• Heavy 20-inch 6.5 Creedmoor barrel with 1:8 twist rate for precision long-range shooting
• DPMS low-profile billet upper receiver, type III hardcoat black anodized
• 17-inch freefloat M-Lok handguard for accessory mounting and heat management
• Rifle-length gas system with low-profile gas block for tuned cycling
• Recoil Technologies nitride bolt carrier group compatible with .308 Winchester, 6.5 Creedmoor, and .243 Winchester
• 5/8x24 muzzle threads with GI-style birdcage flash hider and crush washer included
• Stainless steel rifle-length gas tube

Perfect For

• Long-range shooters building precision AR-10 rifles
• Hunters pursuing medium to large game at extended distances
• Precision rifle competitors using DPMS-pattern platforms
• Builders seeking a complete upper assembly without lower receiver commitment

Precision-Focused Design

The 1:8 twist rate stabilizes heavier 6.5 Creedmoor projectiles, making this upper ideal for precision applications where velocity and ballistic performance matter. The straight-fluted heavy barrel reduces weight while maintaining rigidity and thermal characteristics needed for consistent shot groups. Parkerized finishing provides durable corrosion resistance for field use without sacrificing accuracy potential.

Freefloat Platform and Modular Mounting

The 17-inch M-Lok handguard isolates the barrel from support pressure, preserving inherent accuracy. M-Lok attachment points allow you to configure accessories exactly as your shooting discipline demands, whether that's for tactical competition, hunting, or range work. The low-profile gas block keeps sight lines clear and reduces overall profile.

Complete Upper Compatibility

This upper uses DPMS low-profile pattern components, the standard for LR-308 platforms. The nitride BCG handles .308 Winchester, 6.5 Creedmoor, and .243 Winchester ammunition, giving you platform flexibility. The 5/8x24 muzzle threads accept standard suppressors and muzzle devices when you're ready to expand your setup.

Rifle-Gas Cycling

The rifle-length gas system delivers reliable cycling tuned to the barrel length and platform weight. A low-profile gas block integrates cleanly with the handguard while maintaining adjustability for different ammunition types and suppressor configurations if needed later.

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