Davidson Defense Deadlock SBR Ready AR-45 Quad-Rail Pistol Full Build Kit, 7.5-Inch 1:16 45ACP

Deadlock SBR Ready AR-45 Quad-Rail Pistol Full Build Kit, 7.5-Inch 1:16 45ACP

This is a complete .45 ACP AR-45 pistol build kit with everything except the lower receiver. You get a 7.5-inch 4150 CrMoV barrel, a free-float quad-rail handguard, a PCC bolt carrier, and a Witt Machine Freakin45 suppressor ready to go. The whole setup is SBR ready, which means it ships without a brace so you can configure it however you want.

Key Features

• 7.5-inch Bear Creek 4150 CrMoV barrel with 1:16 twist rate for .45 ACP
• Pistol-caliber blowback operating system
• Free-float quad-rail handguard with 10 inches of Picatinny rail
• Witt Machine Freakin45 4-inch suppressor with Hughes Precision thread adapter
• PCC bolt carrier assembly for .45 ACP reliability
• Complete lower parts kit with mil-spec carbine buffer system
• SBR ready configuration
• Black anodized finish throughout

Perfect For

• Shooters building a compact .45 ACP pistol platform
• Users wanting a complete kit without the lower receiver hassle
• Suppressor-ready builds with integrated thread adapter
• Those planning SBR registration and brace selection
• Shooters who prefer the ballistics and handling of .45 ACP in a compact form factor

SBR Ready Configuration

This kit ships without a brace, giving you full flexibility to choose your own configuration based on your final setup. The SBR ready design means you can add a brace for pistol configuration or, if you register as an SBR with your state and federal authorities, install a stock. The configuration is entirely dependent on your selection and compliance with applicable laws.

Witt Machine Freakin45 Suppressor Integration

The included Witt Machine Freakin45 is a 4-inch ultra-compact suppressor finished in graphite black Cerakote. A Hughes Precision thread adapter converts the barrel's .578x28 threading to the suppressor's 5/8x24 standard, ensuring reliable mounting. The compact design pairs well with the 7.5-inch barrel for a balanced, maneuverable package.

Free-Float Quad-Rail Handguard

The 10-inch free-float quad-rail handguard gives you full Picatinny rail coverage on all four sides. Free-float design means the handguard doesn't contact the barrel, supporting consistent accuracy and reducing harmonic interference. The 6061-T6 aluminum construction with anodized finish resists corrosion and wear.

Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws. Lower receiver not included. Ships without a brace. Do not attach a stock unless compliant with applicable laws. Verify compatibility before use. Ensure secure mounting before operation. Use only in accordance with applicable laws.