Details
Davidson Defense Oblivion 10.5" Carbine-Gas 5.56 NATO AR-15 Upper Build Kit | 1:8 Twist | 4150 CMV Nitride Barrel | A2 Upper | Quad Rail
Build a compact, versatile AR-15 upper with the Davidson Defense Oblivion 10.5-inch complete upper build kit. This kit features a 10.5-inch M4-profile barrel machined from 4150 Chrome Moly Vanadium steel with nitride finish for exceptional durability and corrosion resistance. The 1:8 twist rate stabilizes a wide range of bullet weights from 55-grain to 77-grain projectiles, providing accuracy versatility across ammunition types. Chambered in 5.56 NATO for compatibility with both 5.56 and .223 Remington ammunition. The A2 upper receiver is forged from 7075-T6 aluminum with black anodizing for strength and wear resistance. The included quad-rail handguard provides four full-length Picatinny rail sections for maximum accessory mounting flexibility, while the GI Birdcage flash hider manages muzzle flash. Everything needed for a complete upper assembly in one kit.
Key Features
- 10.5-Inch M4 Profile Barrel – Compact length ideal for close-quarters and vehicle applications
- 4150 Chrome Moly Vanadium Steel – Mil-spec barrel material for durability and longevity
- Nitride Finish – Enhanced corrosion resistance and reduced barrel cleaning requirements
- 1:8 Twist Rate – Stabilizes 55-77 grain projectiles for ammunition versatility
- 5.56 NATO Chamber – Accepts both 5.56 NATO and .223 Remington ammunition
- A2 Upper Receiver – Forged 7075-T6 aluminum with black anodized finish
- Quad-Rail Handguard – Four Picatinny rail surfaces for lights, lasers, grips, and accessories
- GI Birdcage Flash Hider – Standard A2-style flash suppression
- Complete Build Kit – All components included for upper assembly
Perfect For
- AR pistol builds requiring compact length with full-power 5.56 performance
- Close-quarters and vehicle-ready configurations prioritizing maneuverability
- Home defense and truck gun builds where compactness matters
- Builders seeking complete upper kits with all necessary components included
4150 CMV Barrel Construction
The 10.5-inch barrel is machined from 4150 Chrome Moly Vanadium steel, the mil-spec standard for AR-15 barrels used in military and law enforcement applications. This steel alloy provides exceptional strength, heat resistance, and barrel life even under rapid-fire conditions. The nitride finish penetrates the steel surface to create a hardened layer that resists corrosion, reduces copper fouling buildup, and simplifies cleaning. The M4 profile maintains a government profile contour that balances weight and rigidity. At 10.5 inches, this barrel length is optimized for compact builds while maintaining sufficient velocity for effective 5.56 NATO performance.
Versatile 1:8 Twist Rate
The 1:8 twist rate provides the rifling stabilization needed for modern ammunition across a wide bullet weight range. This twist adequately stabilizes lightweight 55-grain bulk ammunition, accurate 62-grain M855/green tip, and heavy 77-grain match projectiles used in precision applications. The 1:8 twist strikes an optimal balance between lightweight projectile performance and heavy bullet stabilization, making it the most versatile twist rate for general-purpose 5.56 builds. Whether you're shooting inexpensive practice ammo or premium defensive loads, this twist rate delivers reliable accuracy.
7075-T6 Forged Upper Receiver
The A2-style upper receiver is forged from 7075-T6 aluminum, providing superior strength compared to billet or cast alternatives. Forging aligns the aluminum grain structure for maximum durability in high-stress areas around the barrel extension and bolt lugs. The black anodized finish provides corrosion resistance and wear protection. The A2 upper includes the carry handle-style rear sight tower, giving you integrated backup iron sights. The Picatinny flat-top rail section allows mounting of optics, red dots, or magnified scopes forward of the carry handle.
Maximum Accessory Mounting
The quad-rail handguard provides four continuous Picatinny rail surfaces along the top, bottom, and both sides. This design maximizes mounting options for weapon lights, laser aiming devices, vertical foregrips, angled grips, bipods, and sling mounts. The full-length rails allow positioning accessories exactly where needed for your shooting style. The top rail section aligns with the upper receiver rail for uninterrupted optic mounting. At 10.5 inches, the handguard provides substantial rail space without excessive length or weight.
Complete Upper Build Solution
This kit includes all components necessary for a complete upper assembly: barrel, upper receiver, handguard, and GI Birdcage flash hider. Everything arrives ready for installation—no need to source individual components separately. Pair this upper with your choice of lower receiver, buffer system, and furniture to complete your AR-15 pistol or rifle build.
Follow all applicable federal, state, and local laws regarding barrel length and overall rifle/pistol configurations. Barrels under 16 inches require proper pistol lower configuration or compliance with applicable laws. Always follow safe handling practices and manufacturer guidelines. Verify proper headspacing and function testing before live fire.
