Minotaur 20-inch Rifle-Gas 1:8 6.5 Creedmoor AR-10 Freefloat M-Lok Handguard Rifle Complete Upper Build

Davidson Defense Minotaur 20-inch Rifle-Gas 1:8 6.5 Creedmoor AR-10 Freefloat M-LOK Complete Upper

The Davidson Defense Minotaur is a 6.5 Creedmoor AR-10 Complete Upper built around a 20-inch rifle-length gas platform. The kit centers on a 20-inch HBAR profile barrel in 4150 CrMoV steel with a phosphate finish, 1:8 twist rate, and 5/8x24 thread pitch, paired with a .308 standoff muzzle brake at 5/8x24 for .30 caliber and a black 5/8-inch crush washer. A low-profile gas block at 0.936 diameter and a rifle-length stainless steel gas tube are included on the front end. The high-profile AR-10 upper receiver is 7075-T6 aluminum with a black anodized finish, an LR-308 ejection port door assembly, and a forward assist assembly included, paired with a 15-inch freefloat M-LOK handguard in aircraft-grade aluminum. The nitride LR-308 bolt carrier group in 9310 alloy steel, compatible with .308 Win, 6.5 Creedmoor, and .243 Win, and an aluminum LR-308 charging handle complete the upper component set.

Key Features

• 20-inch HBAR profile barrel, 4150 CrMoV steel, phosphate finish, 1:8 twist, 5/8x24 thread pitch
• Rifle-length gas system
• Rifle-length stainless steel gas tube
• Low-profile gas block, 0.936
• .308 standoff muzzle brake, 5/8x24, .30 caliber, black crush washer included
• High-profile AR-10 upper receiver, 7075-T6 aluminum, black anodized, LR-308 ejection port door assembly, forward assist assembly
• 15-inch freefloat M-LOK handguard, aircraft-grade aluminum
• Nitride LR-308 bolt carrier group, 9310 alloy steel, .308 Win and 6.5 Creedmoor and .243 Win compatible
• Aluminum LR-308 charging handle

Perfect For

• Builders sourcing a complete 6.5 Creedmoor AR-10 upper ready to pair with their own lower receiver
• Shooters building a 20-inch 6.5 Creedmoor rifle platform who want the nitride LR-308 BCG and charging handle already included
• AR-10 builders who want an HBAR profile barrel, aircraft-grade aluminum freefloat M-LOK handguard, and .308 standoff muzzle brake covered in one complete upper

Barrel and Muzzle Device

The 20-inch HBAR profile barrel is chambered in 6.5 Creedmoor and constructed from 4150 CrMoV steel with a phosphate finish. The HBAR profile adds mass along the barrel body compared to a standard medium profile, providing additional rigidity. The twist rate is 1:8 and the thread pitch is 5/8x24, which matches the included .308 standoff muzzle brake for .30 caliber. A black 5/8-inch crush washer, a low-profile gas block at 0.936 diameter, and a rifle-length stainless steel gas tube cover the front end gas configuration on this rifle-length platform. At 20 inches this barrel covers the full rifle-length gas system profile and provides the extended sight radius and velocity characteristics of a full-length AR-10 rifle platform.

High-Profile Upper Receiver and Handguard

The high-profile AR-10 upper receiver is 7075-T6 aluminum with a black anodized finish, an LR-308 style ejection port door assembly, and a forward assist assembly included. The 15-inch freefloat M-LOK handguard is aircraft-grade aluminum with M-LOK attachment points along the body for accessory mounting. These two components define the exterior structure of the upper assembly on this AR-10 platform.

Bolt Carrier Group and Charging Handle

The nitride LR-308 bolt carrier group is 9310 alloy steel with a nitride finish, compatible with .308 Win, 6.5 Creedmoor, and .243 Win. An aluminum LR-308 charging handle is included to complete the upper component set.

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