Davidson Defense Suppressor Ready Thornfield 5-inch 1:16 45ACP AR-45 Freefloat M-Lok Handguard Pistol Upper Build Kit

Suppressor Ready Thornfield 5-Inch 1-16 .45 ACP AR-45 Freefloat M-LOK Handguard Pistol Upper Build Kit

This is an AR-45 upper build kit chambered in .45 ACP, built around a 5-inch slim profile 4150 Chrome Moly Vanadium steel barrel with a Parkerized finish, a 1-16 twist rate, and a direct blowback system with no gas tube or gas block. The barrel is threaded at 37-64x28 and includes a Hughes Precision thread adapter converting from .578x28 RH female to 5-8x24 RH male for standard suppressor and muzzle device compatibility. The billet aluminum AR-15 pistol caliber upper receiver anchors the front end. The 4.2-inch freefloat M-LOK handguard in black 7075-T6 aluminum with an integrated hand stop covers the compact forend. BCG and charging handle are not included.

Key Features

• .45 ACP chambering, 5-inch slim profile 4150 Chrome Moly Vanadium steel barrel, Parkerized finish
• 1-16 twist rate, 37-64x28 thread pitch
• Hughes Precision thread adapter, .578x28 RH female to 5-8x24 RH male, included
• Direct blowback operation, no gas tube or gas block
• Billet aluminum AR-15 pistol caliber upper receiver
• 4.2-inch freefloat M-LOK handguard, 7075-T6 aluminum, black, integrated hand stop

Perfect For

• AR-45 pistol builders sourcing a .45 ACP upper assembly without BCG or charging handle
• Shooters adding a compact suppressor-ready 5-inch .45 ACP upper to an existing lower with a compatible PCC bolt assembly and charging handle on hand
• Builders who want a 5-inch .45 ACP slim barrel and freefloat M-LOK handguard with an integrated hand stop and the Hughes Precision thread adapter already included in one compact upper kit

Upper Receiver and Barrel

The billet aluminum AR-15 pistol caliber upper receiver forms the core of the front end for the AR-45 platform. The 5-inch slim profile 4150 Chrome Moly Vanadium steel barrel brings a Parkerized finish and a 1-16 twist rate to the .45 ACP chamber, threaded at 37-64x28. The included Hughes Precision thread adapter converts the 37-64x28 barrel thread to a 5-8x24 RH male output, allowing standard suppressor and muzzle device options threaded in 5-8x24 RH to thread directly onto this upper. This upper operates on a direct blowback system, meaning there is no gas tube or gas block present or required on this upper. The 4.2-inch freefloat M-LOK handguard in black 7075-T6 aluminum surrounds the barrel along the compact forend with M-LOK slots along the handguard surfaces for accessory attachment and an integrated hand stop built directly into the handguard body.

Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws. Verify suppressor compatibility before use. Ensure secure mounting before use. BCG and charging handle are not included.