Davidson Defense Wyvern 16-inch Carbine-Gas 1:8 6.5 Grendel AR-15 M-Lok Handguard Rifle Full Build Kit

Wyvern 16-inch Carbine-Gas 1:8 6.5 Grendel AR-15 M-Lok Handguard Rifle Full Build Kit

The Wyvern 6.5 Grendel full build kit delivers a complete rifle platform optimized for mid-range precision and hunting applications. This kit pairs a 16-inch 4150 CrMoV barrel with a 1:8 twist rate designed to stabilize heavier 6.5 Grendel projectiles. The carbine-length gas system cycles reliably while keeping the overall profile compact. You're getting a free-float M-Lok handguard, mil-spec lower parts kit, buffer system, and everything needed to complete a functional rifle except the serialized lower receiver.

Key Features

• 16-inch 4150 CrMoV barrel with 1:8 twist rate optimized for 6.5 Grendel ammunition
• Free-float 15-inch M-Lok handguard for accessory mounting flexibility
• Carbine-length gas system with .750" micro low-profile gas block
• AR-15 6.5 Grendel II complete bolt carrier group with QPQ nitride finish
• Mil-spec lower parts kit, buffer tube, buffer, and recoil spring included
• Adaptive Tactical EX Performance adjustable stock for length-of-pull customization
• GI birdcage flash hider with 5/8x24 thread pitch and crush washer

Perfect For

• Hunters pursuing medium to large game at 200-400 yard distances
• Shooters building their first precision rifle platform
• Builders seeking a complete upper and lower components package
• Those wanting a compact carbine without sacrificing ballistic performance

6.5 Grendel Platform Advantages

The 6.5 Grendel cartridge delivers superior ballistic coefficients compared to 5.56 NATO while remaining subsonic-capable with appropriate ammunition selection. The 1:8 twist rate stabilizes bullets from 90 to 130 grains effectively, giving you flexibility in ammunition choice. This platform excels at extended ranges where 5.56 performance drops off, making it ideal for hunting and precision shooting applications where the extra velocity and energy matter.

Mil-Spec Reliability and Compatibility

Every component in this kit meets military specifications for durability and interchangeability. The QPQ nitride-finished bolt carrier group resists corrosion and wear through extended shooting sessions. The 7075-T6 aluminum upper receiver with M4 feed ramps ensures reliable feeding across quality ammunition types. Mil-spec dimensions mean future upgrades and parts swaps remain straightforward without compatibility concerns.

Free-Float Handguard and Accessory Mounting

The 15-inch M-Lok handguard floats above the barrel, eliminating contact that can shift point of impact between shots. M-Lok mounting slots run along the handguard length, letting you attach lights, bipods, and other tactical accessories without removing the handguard. This setup supports both hunting and tactical configurations depending on your intended use.

Complete Build System

This full build kit includes the bolt carrier group, charging handle, lower parts kit, buffer tube, buffer, recoil spring, end plate, castle nut, and Adaptive Tactical stock. You're not buying separate components—everything works together as a system. The only item not included is the serialized lower receiver, which you'll source through your local FFL dealer.

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