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

Watchtower 18-inch Rifle-Gas 1:8 6.5 Creedmoor AR-10 M-Lok Rifle Full Build Kit with Plan B Muzzle Device

This is a complete 6.5 Creedmoor AR-10 platform rifle kit built on the LR-308 pattern. It combines a precision 18-inch 4150 CrMoV barrel with a free-float M-Lok handguard, adjustable gas block, and nitride-finished bolt carrier group. The kit includes everything you need to complete a functional rifle except the serialized lower receiver. Plan B Trident Flash Hider is included for modular suppressor mounting compatibility.

Key Features

• 18-inch 4150 CrMoV barrel with 1:8 twist rate, Melonite finish, and straight fluting for 6.5 Creedmoor precision
• Free-float 17-inch Swift Series M-Lok handguard eliminates barrel contact for consistent accuracy
• Adjustable gas block with .936" diameter allows tuning for different ammunition loads and suppressed operation
• Nitride Recoil Technologies bolt carrier group rated for .308 Win, 6.5 Creedmoor, and .243 Win
• Plan B Trident Flash Hider with 5/8x24 threads supports modular suppressor ecosystem
• LR-308 billet upper receiver with Type III hardcoat anodize and DPMS low-profile pattern
• Rifle-length stainless steel gas tube with standard low-profile gas block
• Adaptive Tactical EX Performance adjustable stock with six-position adjustment
• Mil-spec lower parts kit, heavy-duty buffer tube, extra power buffer spring made in the USA, and castle nut included

Perfect For

• Precision rifle builds using 6.5 Creedmoor for extended-range shooting
• Shooters upgrading from AR-15 platforms to larger caliber AR-10 systems
• Builders seeking a complete kit that eliminates compatibility guesswork
• Suppressor-ready configurations with Plan B modular mounting interface

Plan B Modular Suppressor Ecosystem

The included Plan B Trident Flash Hider opens access to the Plan B suppressor mounting ecosystem. This system provides quick-detach compatibility with Plan B suppressors and other Plan B-compatible muzzle devices, eliminating the need for permanent barrel threading. The modular design lets you swap components without gunsmithing, making it ideal for shooters who want flexibility in their setup without changing barrel threads.

Adjustable Gas Block Tuning

The included adjustable gas block allows you to dial in gas flow based on your ammunition and whether you run the rifle suppressed or unsuppressed. Heavier ammunition loads and suppressed operation both increase backpressure, so the adjustability ensures reliable cycling across different ammunition types. This is a significant advantage over fixed gas blocks on precision rifle builds where ammunition selection matters.

LR-308 Platform Compatibility

This kit uses the LR-308 pattern, which differs from the standard DPMS pattern in magazine compatibility and some component dimensions. The included Recoil Technologies bolt carrier group is rated for .308 Win, 6.5 Creedmoor, and .243 Win, giving you flexibility if you decide to change calibers later. The LR-308 pattern is widely supported across aftermarket components and ammunition is readily available.

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 compatibility before use. Ensure secure mounting before operation. Use only in accordance with applicable laws.