Davidson Defense Whitecap 10.5" 5.56 NATO AR-15 Pistol Build Kit, 7" Quad Rail Handguard, 1:8, SBR Ready

Whitecap 10.5" 5.56 NATO AR-15 Pistol Build Kit, 7" Quad Rail Handguard, 1:8, SBR Ready

This is a complete SBR Ready build kit for the 5.56 NATO platform. It includes everything except the lower receiver, so you can assemble a compact pistol configuration or convert it to a short-barreled rifle when you're ready. The 10.5" barrel pairs with carbine-length gas to keep the system reliable in a compact package. You get a quality upper receiver, bolt carrier group, charging handle, lower parts kit, and buffer system all in one kit.

Key Features

• 10.5" nitride 4150 chrome moly M4 profile barrel with 1:8 twist rate
• 7075-T6 aluminum upper receiver with anodized finish and M4 feed ramps
• 7" quad-rail handguard with Picatinny rails on all four sides
• Complete USA-made bolt carrier group with 9310 alloy steel carrier and nitride finish
• Mil-spec lower parts kit, carbine buffer tube, buffer, and recoil spring included
• A2-style front sight base with USA-made steel sight post and plunger assembly
• SBR Ready configuration

Perfect For

• Shooters building a compact 5.56 NATO pistol platform
• Those planning to convert to an SBR when legally compliant
• Builders who want a complete upper and lower parts kit solution
• Users seeking a reliable carbine-length gas system in a short-barrel format
• Shooters who prefer quad-rail modularity for mounting accessories

SBR Ready Configuration

This kit ships without a brace, designed for shooters who want to select their own final configuration. The SBR Ready setup means you have the freedom to add a brace for pistol use or transition to a stock when you're ready to form an NFA trust and file the appropriate paperwork. The compact 10.5" barrel and carbine-length gas system are optimized for this flexible platform, giving you the option to build exactly what you need.

Quad-Rail Modularity

The 7" quad-rail handguard provides four full Picatinny rails for mounting lights, lasers, grips, and other tactical accessories. The 6061-T6 aluminum construction keeps weight down while maintaining durability. The drop-in design works with the included delta ring assembly for a secure fit without modifications.

Carbine-Length Gas System Performance

The carbine-length stainless steel gas tube with A2-style front sight base delivers reliable cycling in the compact 10.5" package. This gas system length is standard for short-barrel builds and balances reliability with recoil management. The system cycles 5.56 NATO and .223 Remington ammunition without adjustment.

Complete Bolt Carrier Group

The USA-made bolt carrier group uses 9310 alloy steel with nitride finish for durability and corrosion resistance. The carrier is compatible with 5.56 NATO, .223 Remington, .300 Blackout, and .350 Legend platforms, giving you flexibility if you decide to reconfigure later.

Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws. Ships without a brace. Do not attach a stock unless compliant with applicable laws. Lower receiver not included.