Davidson Defense Marauder 10.5-inch Carbine-Gas 1:8 5.56 NATO AR-15 Freefloat M-Lok Handguard Pistol Upper Build Kit

Marauder 10.5-inch Carbine-Gas 1:8 5.56 NATO AR-15 Freefloat M-LOK Pistol Upper Build Kit

The Marauder is a 5.56 NATO AR-15 Upper Build Kit built around a compact 10.5-inch carbine-length gas platform. The kit centers on a 10.5-inch cryogenically treated Sandel steel barrel with a phosphate finish, 1:8 twist rate, and 1/2x28 thread pitch, paired with an A2 birdcage flash hider and a black crush washer. A micro low-profile gas block at 0.750 diameter and a carbine-length stainless steel gas tube are included on the front end. The upper receiver is 7075-T6 aluminum with an anodized black finish, M4 feed ramps, an ejection port cover assembly, and a forward assist, paired with a 10-inch freefloat M-LOK handguard in black with a full-length Picatinny top rail. BCG and charging handle are not included.

Key Features

• 10.5-inch cryogenically treated Sandel steel barrel, phosphate finish, 1:8 twist, 1/2x28 thread pitch, 5.56 NATO
• Carbine-length gas system
• Carbine-length stainless steel gas tube
• Micro low-profile gas block, 0.750
• A2 birdcage flash hider, 1/2x28, black crush washer included
• 7075-T6 aluminum upper receiver, anodized black, M4 feed ramps, ejection port cover assembly, forward assist
• 10-inch freefloat M-LOK handguard, black, full-length Picatinny top rail
• BCG and charging handle not included

Perfect For

• Builders sourcing a compact 5.56 NATO AR-15 pistol upper build kit with a cryogenically treated Sandel barrel and 7075-T6 upper receiver, pairing it with their own bolt carrier group and charging handle
• Shooters building a 10.5-inch carbine-gas pistol platform who prefer to select their own BCG while having the cryogenically treated barrel, forward assist upper, and freefloat M-LOK handguard covered in one kit
• AR-15 builders who want a 10-inch freefloat M-LOK handguard with a full-length Picatinny top rail on a 10.5-inch cryogenically treated barrel platform without sourcing components separately

Barrel and Muzzle Device

The 10.5-inch Sandel barrel is chambered in 5.56 NATO and constructed from steel with a phosphate finish and cryogenic treatment. Cryogenic treatment subjects the barrel steel to deep cold temperatures to relieve residual stress in the metal structure. The twist rate is 1:8 and the thread pitch is 1/2x28, which matches the included A2 birdcage flash hider. A black crush washer, a micro low-profile gas block at 0.750 diameter, and a carbine-length stainless steel gas tube cover the front end gas configuration on this carbine-length platform.

Upper Receiver and Handguard

The 7075-T6 aluminum upper receiver carries an anodized black finish with M4 feed ramps, an ejection port cover assembly, and a forward assist. The 10-inch freefloat M-LOK handguard is black with a full-length Picatinny top rail and M-LOK attachment points along the body for accessory and rail section mounting. These two components define the exterior structure of the upper assembly on this AR-15 platform.

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