Davidson Defense Fleetbane w/Gauntlet Arms Brace 10.5-inch Pistol-Gas 1:8 .300 BLK AR-15 Freefloat M-Lok Handguard Pistol Full Build Kit

Fleetbane Gauntlet Arms Brace 10.5-inch Pistol-Gas 1:8 .300 BLK AR-15 Freefloat M-LOK Pistol Full Build Kit

The Fleetbane is a .300 AAC Blackout AR-15 Full 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. A complete AR-15 bolt carrier group compatible with .223 Remington, 5.56 NATO, .300 Blackout, and .350 Legend, and a Mil-Spec AR-15 M4 charging handle complete the upper side. The lower hardware includes a complete Mil-Spec AR-15 lower parts kit, a heavy-duty AR-15 pistol buffer tube, a standard 3 oz AR-15 carbine buffer, a USA-made standard AR-15 carbine recoil spring, a Mil-Spec AR-15 M16 receiver end plate, and a Mil-Spec AR-15 castle nut. The Gauntlet Arms polymer stabilizing brace in black is included. Lower receiver 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
• Complete AR-15 bolt carrier group, .223 Remington and 5.56 NATO and .300 Blackout and .350 Legend compatible
• Mil-Spec AR-15 M4 charging handle
• Complete Mil-Spec AR-15 lower parts kit
• Heavy-duty AR-15 pistol buffer tube
• Standard AR-15 carbine buffer, 3 oz
• Standard AR-15 carbine recoil spring, made in USA
• Mil-Spec AR-15 M16 receiver end plate
• Mil-Spec AR-15 castle nut
• Gauntlet Arms polymer stabilizing brace, black

Perfect For

• Builders sourcing a complete .300 AAC Blackout AR-15 pistol full build kit with a 7075-T6 anodized upper receiver with forward assist, 10.5-inch HBAR parkerized barrel, BCG compatible with multiple calibers, 10-inch Trinity Force KMX freefloat M-LOK handguard, and Gauntlet Arms polymer brace with pistol buffer tube already included, pairing it with their own lower receiver
• Shooters building a compact 10.5-inch pistol-gas .300 BLK platform who want the BCG, charging handle, complete lower parts kit, pistol buffer tube, and Gauntlet Arms polymer brace covered in one kit with a GI birdcage flash hider at 5/8x24 and a Trinity Force KMX freefloat M-LOK handguard
• AR-15 pistol builders who want a .300 AAC Blackout full build kit with a BCG compatible with multiple calibers and a Gauntlet Arms polymer brace 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.

Bolt Carrier Group and Charging Handle

The complete AR-15 bolt carrier group is compatible with .223 Remington, 5.56 NATO, .300 Blackout, and .350 Legend. A Mil-Spec AR-15 M4 charging handle is included to complete the upper component set.

Lower Parts Kit and Buffer System

The complete Mil-Spec AR-15 lower parts kit covers the internal lower receiver components. The buffer system includes a heavy-duty AR-15 pistol buffer tube, a standard 3 oz AR-15 carbine buffer, a USA-made standard AR-15 carbine recoil spring, a Mil-Spec AR-15 M16 receiver end plate, and a Mil-Spec AR-15 castle nut. The Gauntlet Arms polymer stabilizing brace in black pairs with the included pistol buffer tube and covers the rear brace interface for this pistol lower build kit.

Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws. Lower receiver not included. Verify local and state laws regarding pistol brace use and classification.