Davidson Defense High Ground 18" AR-10 6.5 Creedmoor Rifle Build Kit, Rifle-Gas, Plan B Trident

High Ground 18-Inch Rifle-Gas 1:8 6.5 Creedmoor AR-10 M-Lok Full Build Kit, Plan B Trident Flash Hider

This is a complete 6.5 Creedmoor AR-10 build kit designed for precision rifle shooters who want a mid-range barrel length without sacrificing accuracy or velocity. The 18-inch heavy barrel with a 1:8 twist rate stabilizes modern 6.5 Creedmoor ammunition, while the rifle-length gas system provides reliable cycling with an adjustable gas block for tuning. The freefloat M-Lok handguard isolates the barrel from external pressure, and the included Plan B Trident flash hider offers modular suppressor mounting compatibility. All major components are included except the lower receiver, which you'll source separately.

Key Features

• 18-inch 4150 CrMoV heavy barrel with straight fluting and melonite finish for durability and heat management
• 1:8 twist rate optimized for 6.5 Creedmoor precision ammunition
• Rifle-length gas system with adjustable low-profile gas block for fine-tuned cycling control
• 15-inch freefloat M-Lok handguard with high-profile design for accessory mounting flexibility
• Recoil Technologies nitride bolt carrier group compatible with .308 Winchester, 6.5 Creedmoor, and .243 Winchester
• Plan B Trident flash hider with 5/8x24 threads for modular suppressor ecosystem integration
• Complete lower parts kit, buffer tube, buffer, recoil spring, castle nut, and end plate included
• Adaptive Tactical adjustable stock on mil-spec carbine buffer tube for length-of-pull customization
• LR-308 charging handle and ejection port cover assembly

Perfect For

• Long-range precision shooters building a 6.5 Creedmoor AR-10 platform
• Hunters seeking a mid-range barrel with consistent velocity and accuracy
• Builders who want a complete kit minus the serialized lower receiver
• Shooters planning suppressor integration through the Plan B modular mounting system

Plan B Muzzle Device Ecosystem

The included Plan B Trident flash hider is built on Delta Team Tactical's modular mounting platform. This design supports direct suppressor attachment and works within the Plan B ecosystem, allowing you to upgrade or swap suppressors without changing the flash hider. The 5/8x24 thread pitch is standard for .308 and larger caliber platforms, ensuring broad compatibility with aftermarket suppressors and accessories.

6.5 Creedmoor Platform Advantages

The 6.5 Creedmoor cartridge offers a flatter trajectory and less wind drift than .308 Winchester while maintaining effective range and energy. The 1:8 twist rate in this barrel stabilizes modern 6.5 Creedmoor factory loads and heavier custom ammunition. The 18-inch length balances velocity retention, handling, and barrel life compared to longer precision rifle configurations.

Adjustable Gas Block Tuning

The included adjustable low-profile gas block lets you dial in the gas port to match your specific ammunition and suppressor setup. This reduces felt recoil, extends component life, and improves reliability when running different ammunition types or adding a suppressor later. The .936-inch journal diameter matches the barrel profile for secure installation.

Build Kit Component Clarity

This kit includes the upper assembly, bolt carrier group, charging handle, lower parts kit, buffer tube, buffer, recoil spring, castle nut, and end plate. The lower receiver is not included and must be sourced separately as a serialized component. Once you add a lower receiver and assemble the kit, you'll have a complete 6.5 Creedmoor AR-10 rifle.

Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws. Lower receiver not included. May dropship from Davidson Defense. Verify suppressor compatibility before use. Ensure secure mounting before operation. Use only in accordance with applicable laws.