Davidson Defense Davidson Defense 'Meteoric Ore' 7.5-inch AR-15 .300BLK Phosphate Pistol Upper Build Kit

Davidson Defense 'Meteoric Ore' 7.5-Inch AR-15 .300BLK Phosphate Pistol Upper Build Kit

This upper build kit delivers a compact, hard-hitting .300 Blackout platform built on quality materials. The 7.5-inch 4150 CrMoV barrel with phosphate finish pairs with a 7075-T6 aluminum receiver and micro low-profile gas block, creating a reliable foundation for a pistol-length AR-15 build. The included 7-inch quad-rail handguard provides mounting flexibility for lights, lasers, or other accessories.

Key Features

• 4150 CrMoV barrel with phosphate finish, 1:8 twist rate optimized for .300 Blackout subsonic and supersonic loads
• 7075-T6 aluminum upper receiver with anodized finish and M4 feed ramp
• Micro low-profile gas block paired with pistol-length gas tube for reliable cycling
• 7-inch quad-rail handguard in 6061-T6 aluminum for accessory mounting
• Includes forward assist assembly, ejection port door, AR-15 birdcage flash hider with crush washer, and all necessary components

Perfect For

• Shooters building compact .300 Blackout pistol platforms
• Suppressor-ready builds seeking a shorter, maneuverable upper
• Builders prioritizing quality materials and precision machining
• Pistol-length AR builds for tactical or recreational use

Compact .300 Blackout Design

The 7.5-inch barrel length makes this upper ideal for close-quarters shooting and suppressed fire. The .300 Blackout caliber excels with subsonic ammunition, delivering consistent performance in confined spaces. The 1:8 twist rate stabilizes both heavy subsonic rounds and faster supersonic loads, giving you flexibility in ammunition selection.

Quad-Rail Accessory Ecosystem

The 7-inch quad-rail handguard offers four mounting surfaces for lights, lasers, vertical grips, or other tactical accessories. The aluminum construction keeps weight down while maintaining rigidity. This layout is standard across AR-15 platforms, ensuring compatibility with most aftermarket rail-mounted gear.

Phosphate Barrel Durability

The 4150 CrMoV barrel finished in phosphate provides corrosion resistance and proven longevity. Phosphate is a time-tested military finish that handles both suppressed and unsuppressed fire. The HBAR profile balances weight and heat management for extended shooting sessions.

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