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

Davidson Defense Gladius 10.5 Inch Pistol-Gas 1-8 .300 BLK AR-15 Freefloat Tubular M-Lok Handguard Pistol Complete Upper

The Davidson Defense Gladius Complete Upper is chambered in .300 Blackout and built on the AR-15 platform. This complete upper includes a 10.5-inch HBAR barrel with a pistol-length gas system, a micro low-profile gas block, a freefloat tubular M-Lok handguard, an AR-15 upper receiver with M4 feed ramps, a complete bolt carrier group, an AR-15 M4 charging handle, and a GI birdcage flash hider.

Key Features

• 10.5-inch HBAR barrel in 4150 CrMoV steel with phosphate finish and 1:8 twist rate
• Pistol-length gas system
• Micro low-profile gas block, .750 OD, steel construction
• 5-8x24 barrel thread pitch
• Freefloat tubular M-Lok handguard in aluminum
• AR-15 upper receiver with M4 feed ramps in 7075-T6 aluminum with anodized finish
• AR-15 complete bolt carrier group in 9310 alloy steel with nitride finish, made in the USA
• AR-15 M4 charging handle, Mil-Spec
• GI birdcage flash hider, 5-8x24 thread pitch

Perfect For

• AR-15 builders sourcing a complete .300 Blackout upper with BCG and charging handle included
• Those working with a 10.5-inch HBAR barrel and pistol-length gas system configuration
• Builders seeking a complete upper ready to pair with a lower receiver
• Those adding a USA-made bolt carrier group to a .300 Blackout pistol-length build

Barrel and Gas System

The 10.5-inch HBAR barrel is constructed from 4150 CrMoV steel with a phosphate finish and a 1:8 twist rate. The barrel is chambered in .300 Blackout with a pistol-length gas system and a 5-8x24 thread pitch. The micro low-profile gas block has a .750-inch outer diameter and is constructed from steel, and it sits beneath the handguard as a separate component independent of the handguard body.

Handguard and Upper Receiver

The freefloat tubular M-Lok handguard is constructed from aluminum and provides M-Lok attachment points along the handguard body for accessory mounting. The tubular profile keeps the overall weight of the handguard low while maintaining a full-length mounting surface. The AR-15 upper receiver is constructed from 7075-T6 aluminum with an anodized finish and includes M4 feed ramps.

Bolt Carrier Group and Charging Handle

The complete bolt carrier group is compatible with AR-15 5.56, .223, .300, and .350 configurations and is constructed from 9310 alloy steel with a nitride finish. This bolt carrier group is made in the USA. The AR-15 M4 charging handle is Mil-Spec quality and is included with this complete upper.

Muzzle Device

The included muzzle device is an AR-15 and AR-10 GI birdcage flash hider with a 5-8x24 thread pitch. The thread pitch matches the barrel thread pitch on this complete upper. This muzzle device is listed as compatible with AR-15 and AR-10 platforms at the 5-8x24 thread specification.

Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws.