Davidson Defense Marauder 10.5-inch 1:10 9MM AR-9 Freefloat M-Lok Handguard Pistol Complete Upper Build

Marauder 10.5-inch 1:10 9mm AR-9 Freefloat M-LOK Pistol Complete Upper

The Marauder is a 9mm AR-9 Complete Upper built around a 10.5-inch platform. The kit centers on a 10.5-inch Bear Creek Arsenal steel barrel with a black nitride finish, 1:10 twist rate, and 1/2x36 thread pitch, paired with a black A2 birdcage flash hider and a crush washer. The upper receiver is a Vertex Enhanced pistol caliber billet aluminum PCC upper receiver with a black anodized finish, paired with a 10-inch freefloat M-LOK handguard with a full-length Picatinny top rail. A complete 9mm bolt carrier group in 8620 alloy steel with a black nitride finish and an external extractor, compatible with Glock and Colt pattern magazines, and a standard Mil-Spec aluminum charging handle with a black anodized finish complete the upper component set.

Key Features

• 10.5-inch Bear Creek Arsenal steel barrel, black nitride finish, 1:10 twist, 1/2x36 thread pitch, 9mm
• A2 birdcage flash hider, black, crush washer included
• Vertex Enhanced pistol caliber billet aluminum PCC upper receiver, black anodized
• 10-inch freefloat M-LOK handguard, full-length Picatinny top rail
• Complete 9mm bolt carrier group, 8620 alloy steel, black nitride finish, external extractor, Glock and Colt pattern magazine compatible
• Standard Mil-Spec aluminum charging handle, black anodized

Perfect For

• Builders sourcing a complete 9mm AR-9 pistol upper with a Bear Creek Arsenal nitride barrel, Vertex Enhanced PCC billet upper, and BCG already included, pairing it with their own lower receiver
• Shooters building a compact 10.5-inch 9mm pistol platform who want Glock and Colt pattern magazine compatibility and the BCG and charging handle covered in one complete upper
• AR-9 builders who want a 10-inch freefloat M-LOK handguard with a full-length Picatinny top rail on a dedicated PCC billet upper without sourcing components separately

Barrel and Muzzle Device

The 10.5-inch Bear Creek Arsenal barrel is chambered in 9mm and constructed from steel with a black nitride finish. The twist rate is 1:10 and the thread pitch is 1/2x36, which matches the included black A2 birdcage flash hider. A crush washer is included with the muzzle device.

Vertex Enhanced PCC Upper Receiver and Handguard

The Vertex Enhanced pistol caliber billet aluminum PCC upper receiver carries a black anodized finish and is purpose-built around the AR-9 platform. The 10-inch freefloat M-LOK handguard features a full-length Picatinny top rail and M-LOK attachment points along the body for accessory mounting. These two components define the exterior structure of the upper assembly on this AR-9 platform.

9mm Bolt Carrier Group and Charging Handle

The complete 9mm bolt carrier group is 8620 alloy steel with a black nitride finish and an external extractor, compatible with both Glock and Colt pattern magazines. A standard Mil-Spec aluminum charging handle with a black anodized finish is included to complete the upper component set.

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