Davidson Defense Nemesis X 5.5-inch 1:16 10MM AR-15 Freefloat M-Lok Handguard Pistol Upper Build Kit

Nemesis X 5.5-Inch 1-16 10mm AR-15 Freefloat M-LOK Handguard Pistol Upper Build Kit

This is an AR-15 upper build kit chambered in 10mm Auto, built around a 5.5-inch heavy profile 10mm barrel with a black nitride finish and a 1-16 twist rate. The 6061 AR-15 slick side billet upper receiver made in the USA with an anti-rotation handguard cutout anchors the front end. The 4.2-inch freefloat M-LOK handguard in 7075-T6 aluminum with an integrated hand stop covers the compact forend. A Pershing steel flash can at 5-8x24 closes out the muzzle end. BCG and charging handle are not included.

Key Features

• 10mm Auto chambering, 5.5-inch heavy profile barrel, black nitride finish
• 1-16 twist rate, 5-8x24 thread pitch
• 6061 AR-15 slick side billet upper receiver, USA made, anti-rotation handguard cutout
• 4.2-inch freefloat M-LOK handguard, 7075-T6 aluminum, integrated hand stop, black
• Pershing steel flash can, 5-8x24 thread pitch
• Black 5-8-inch crush washer

Perfect For

• AR-15 pistol builders sourcing a 10mm upper assembly without BCG or charging handle
• Shooters adding a compact 5.5-inch 10mm PCC upper to an existing lower with a compatible blowback bolt and charging handle on hand
• Builders who want a USA-made slick side billet upper with an anti-rotation handguard cutout and integrated hand stop M-LOK handguard in one compact 10mm upper kit

Upper Receiver and Barrel

The 6061 AR-15 slick side billet upper receiver made in the USA anchors the front end with an anti-rotation handguard cutout that engages directly with the included 4.2-inch freefloat M-LOK handguard for a secure and indexed fit without the need for separate anti-rotation tabs. The slick side exterior profile omits the forward assist from the receiver body, giving the upper a clean and streamlined appearance well suited to the compact pistol caliber AR format. The 5.5-inch heavy profile 10mm barrel brings a black nitride finish and a 1-16 twist rate to the 10mm Auto chamber, threaded at 5-8x24. The 4.2-inch freefloat M-LOK handguard in 7075-T6 aluminum surrounds the barrel along the compact forend with an integrated hand stop that gives the shooter a positive front hand reference point and M-LOK slots along the handguard body for accessory attachment.

Muzzle Device

The Pershing steel flash can threads onto the 5-8x24 muzzle end of the barrel and closes out the front of this compact pistol-length upper with a flash can profile suited to the 10mm bore diameter at this thread pitch. The included black 5-8-inch crush washer seats at the barrel shoulder and completes the muzzle hardware for this kit.

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