Davidson Defense Kodiak Quake 18-inch Mid-Gas 1:24 .450 Bushmaster AR-15 Freefloat M-Lok Handguard Rifle Upper Build Kit

Kodiak Quake .450 Bushmaster 18-Inch Upper Build Kit | Mid-Gas | 1:10 Twist | M-Lok Handguard | Sepal Barrel

The Kodiak Quake .450 Bushmaster 18-Inch Upper Build Kit delivers hard-hitting performance engineered for the .450 Bushmaster cartridge. Built around an 18-inch Sepal barrel made from 4150 chrome moly vanadium steel with a 1:10 twist rate, this upper provides excellent stabilization for a variety of projectile weights. The upper receiver features a black phosphate finish for corrosion resistance and pairs with a freefloat M-Lok handguard machined from 6061-T6 aluminum for lightweight accessory mounting. The kit includes a micro low-profile gas block for Mid-Length gas systems and a KAK .458 compensator with 5/8x32 thread pitch for effective muzzle control and recoil management.

Key Features

• 18-inch Sepal barrel in 4150 chrome moly vanadium steel chambered in .450 Bushmaster
• 1:10 twist rate stabilizes a wide range of .450 Bushmaster projectile weights
• Black phosphate finish on upper receiver for corrosion resistance
• Freefloat M-Lok handguard in 6061-T6 aluminum for lightweight accessory mounting
• Mid-Length gas system with micro low-profile gas block for smoother cycling and reduced recoil
• KAK .458 compensator with 5/8x32 thread pitch for muzzle control
• AR-15 platform compatible for straightforward integration

Perfect For

• Big game hunters seeking powerful stopping performance
• Shooters building dedicated .450 Bushmaster platforms
• Hunters in states requiring straight-wall cartridges
• Applications demanding heavy projectile delivery at moderate range

.450 Bushmaster Power

The .450 Bushmaster cartridge delivers substantial energy and terminal performance for hunting medium to large game. This chambering provides the stopping power needed for deer, hog, and bear hunting while maintaining manageable recoil in the AR-15 platform.

4150 Chrome Moly Vanadium Barrel

The Sepal barrel constructed from 4150 chrome moly vanadium steel provides the strength and durability required for the .450 Bushmaster's operating pressures. The 1:10 twist rate ensures proper stabilization across various bullet weights from lighter projectiles to heavy subsonic loads.

Mid-Length Gas System with Compensator

The Mid-Length gas system paired with the micro low-profile gas block delivers smoother cycling compared to carbine-length systems, reducing felt recoil from the powerful .450 Bushmaster cartridge. The KAK .458 compensator further mitigates muzzle rise and recoil, keeping you on target for faster follow-up shots.

Lightweight M-Lok Platform

The 6061-T6 aluminum M-Lok handguard freefloats the barrel for improved accuracy while providing modular mounting for lights, grips, and bipods. This lightweight construction maintains maneuverability in the field without sacrificing the rigidity needed for consistent shot placement.

Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws. Verify compatibility of all components before assembly. Performance may vary by ammunition type and configuration. Confirm .450 Bushmaster compatibility with your lower receiver and magazine system.