Davidson Defense Aegis Lightweight 10.5-inch Pistol-Gas 1:8 .338 ARC AR-15 Freefloat M-Lok Handguard Pistol Upper Build Kit

Davidson Defense Aegis Lightweight 10.5 Inch Pistol Gas 338 ARC AR-15 Upper Build Kit

This upper build kit combines a 10.5 inch 338 ARC barrel, M-Lok freefloat handguard, and pistol gas system in a compact configuration. The upper receiver is forged 7075-T6 aluminum with anodized finish and M4 feed ramps. The barrel is Bear Creek 4150 CrMoV steel with phosphate finish, HBAR profile, and 1 in 8 twist rate. The handguard is 6061-T6 aluminum with M-Lok slots for accessory compatibility.

Key Features

• 10.5 inch Bear Creek 4150 CrMoV steel HBAR barrel with phosphate finish
• 1 in 8 twist rate chambered in 338 ARC
• Pistol length gas system with 0.750 inch micro low profile gas block
• 7075-T6 forged aluminum upper receiver with anodized finish and M4 feed ramps
• M-Lok freefloat handguard in 6061-T6 aluminum
• 5/8x24 threaded barrel with GI birdcage flash hider
• Freefloat design for thermal management and accuracy potential

Perfect For

• Builders seeking a compact 338 ARC upper configuration
• Pistol or SBR projects requiring shorter barrel lengths
• Shooters prioritizing maneuverability with 338 ARC ballistics
• Home defense or vehicle applications

Compact 338 ARC Configuration

The 10.5 inch Bear Creek HBAR profile barrel is chambered in 338 ARC with a 1 in 8 twist rate for projectile stabilization. The phosphate finish offers corrosion resistance and surface hardness. The pistol gas system is matched to this barrel length for reliable cycling. The barrel features 5/8x24 threads with an included GI birdcage flash hider.

Freefloat M-Lok Handguard

The handguard uses M-Lok attachment points along its length for modular accessory placement. The freefloat design isolates the barrel from handguard contact. The 6061-T6 aluminum construction maintains a lightweight profile while providing structural integrity.

Upper Receiver with M4 Feed Ramps

The 7075-T6 forged aluminum upper receiver features an anodized finish for corrosion resistance. The M4 feed ramps provide enhanced feeding reliability. The upper is compatible with mil-spec AR-15 lower receivers and standard fire control groups.

Micro Low Profile Gas Block

The 0.750 inch micro low profile gas block sits under the handguard for a clean profile. The pistol gas system provides reliable cycling for the 10.5 inch barrel length. The gas system is configured for consistent operation with 338 ARC ammunition.

BCG and charging handle are not included. Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws.