Davidson Defense Fleetbane 10.5-inch Pistol-Gas 1:8 .300 BLK AR-15 Freefloat M-Lok Handguard Pistol Upper Build Kit

Fleetbane 10.5-inch Pistol-Gas 1:8 .300 BLK AR-15 Freefloat M-LOK Pistol Upper Build Kit

The Fleetbane is a .300 AAC Blackout AR-15 Upper Build Kit built around a compact 10.5-inch pistol-length gas platform. The kit centers on a 10.5-inch HBAR profile parkerized barrel with a 1:8 twist rate and 5/8x24 thread pitch, paired with a GI birdcage flash hider compatible with .308 Winchester, 7.62x39, and .300 Blackout, and a black 5/8-inch crush washer. A micro low-profile steel gas block at 0.750 diameter and a pistol-length gas tube are included on the front end. The 7075-T6 aluminum anodized upper receiver features M4 feed ramps, a forward assist, and an ejection port door assembly, paired with a 10-inch Trinity Force KMX freefloat M-LOK handguard. BCG and charging handle are not included.

Key Features

• 10.5-inch HBAR profile parkerized barrel, 1:8 twist, 5/8x24 thread pitch, .300 AAC Blackout
• Pistol-length gas system
• Pistol-length gas tube
• Micro low-profile steel gas block, 0.750
• GI birdcage flash hider, 5/8x24, compatible with .308 Winchester, 7.62x39, and .300 Blackout, black 5/8-inch crush washer included
• 7075-T6 aluminum upper receiver, anodized, M4 feed ramps, forward assist, ejection port door assembly
• 10-inch Trinity Force KMX freefloat M-LOK handguard
• BCG and charging handle not included

Perfect For

• Builders sourcing a compact .300 AAC Blackout AR-15 pistol upper build kit with a 7075-T6 anodized upper receiver with forward assist, 10.5-inch HBAR parkerized barrel, GI birdcage flash hider compatible with .308 Winchester, 7.62x39, and .300 Blackout, and 10-inch Trinity Force KMX freefloat M-LOK handguard, pairing it with their own bolt carrier group and charging handle
• Shooters building a compact 10.5-inch pistol-gas .300 BLK platform who prefer to select their own BCG while having the HBAR parkerized barrel, anodized upper receiver with M4 feed ramps and forward assist, and Trinity Force KMX freefloat M-LOK handguard covered in one kit
• AR-15 pistol builders who want a .300 AAC Blackout upper build kit with a GI birdcage flash hider at 5/8x24 and a 10-inch Trinity Force KMX freefloat M-LOK handguard without sourcing components separately

Barrel and Muzzle Device

The 10.5-inch HBAR profile barrel is chambered in .300 AAC Blackout with a parkerized finish, 1:8 twist rate, and 5/8x24 thread pitch, which matches the included GI birdcage flash hider, compatible with .308 Winchester, 7.62x39, and .300 Blackout. A black 5/8-inch crush washer, a micro low-profile steel gas block at 0.750 diameter, and a pistol-length gas tube cover the front end gas configuration on this pistol-length platform.

Upper Receiver and Handguard

The 7075-T6 aluminum upper receiver carries an anodized finish with M4 feed ramps, a forward assist, and an ejection port door assembly. The 10-inch Trinity Force KMX freefloat M-LOK handguard features M-LOK attachment points along the body for accessory mounting. These two components define the exterior structure of the upper assembly on this AR-15 pistol platform.

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