Davidson Defense Stardust 300 8.5-inch Pistol-Gas 1:8 .300 BLK AR-15 Freefloat Quad-Rail Handguard Pistol Upper Build Kit

Davidson Defense Stardust 300 8.5-inch Pistol-Gas 1-in-8 .300 Blackout AR-15 Freefloat Quad-Rail Upper Build Kit

The Stardust 300 Upper Build Kit from Davidson Defense is a .300 Blackout AR-15 upper assembly built around an 8.5-inch heavy-profile barrel with a pistol-length gas system. The kit includes the upper receiver, barrel, and handguard. The bolt carrier group and charging handle are not included.

Key Features

• .300 Blackout chambering with 8.5-inch heavy-profile pistol-gas barrel
• 4150 Chrome Moly Vanadium barrel with Parkerized finish and 1-in-8 twist rate
• 5-in-8x24 thread pitch with muzzle-mounted fake can
• Panhead billet upper receiver, 6061-T6 aluminum with anodized finish
• Black 6061-T6 aluminum freefloat quad-rail handguard
• Micro low-profile gas block, .750 O.D.

Perfect For

• .300 Blackout AR-15 pistol upper builds
• Builders adding a compact upper assembly to an existing lower
• 8.5-inch barrel configurations in .300 Blackout
• Quad-rail handguard builds with full-length rail surface

Panhead Barrel and Upper Receiver

The barrel runs 8.5 inches in .300 Blackout with a 1-in-8 twist rate, heavy profile, and 4150 Chrome Moly Vanadium construction with a Parkerized finish. The pistol-length gas system pairs with a .750 O.D. micro low-profile gas block. The Panhead billet upper receiver is 6061-T6 aluminum with an anodized finish. Thread pitch is 5-in-8x24, and the kit includes a muzzle-mounted fake can.

Handguard

The freefloat quad-rail handguard is 6061-T6 aluminum with a black finish. The quad-rail profile provides full-length rail surface on all four sides for accessory placement across the entire forend.

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