Davidson Defense Stalwart w/SBA3 Brace 11.5-inch Carbine-Gas 1:8 .223 Wylde AR-15 Freefloat M-Lok Handguard Pistol Full Build Kit

Stalwart with SB Tactical SBA3 Brace 11.5-inch Carbine-Gas 1-in-8 .223 Wylde AR-15 Freefloat M-Lok Handguard Pistol Full Build Kit

This Davidson Defense Stalwart full build kit includes an 11.5-inch KAK Industry .223 Wylde government-profile barrel, a 12-inch MX10 M-Lok handguard in aluminum, a 7075-T6 aluminum upper receiver with M4 feed ramps, a 5.56 and .223 compatible bolt carrier group, an AR-15 M4 aluminum mil-spec charging handle, an SB Tactical SBA3 adjustable pistol stabilizing brace, a mil-spec heavy-duty 6-position buffer tube, a 0.750 micro low-profile gas block, a lower parts kit, a 3 oz buffer, a recoil spring, an end plate, and a castle nut. Lower receiver not included.

Key Features

• 11.5-inch KAK Industry 4140 CrMoV government-profile barrel in .223 Wylde, 1-in-8 twist, nitride finish, 1-in-2x28 thread pitch
• Carbine-length gas system with 0.750 micro low-profile gas block
• 12-inch MX10 M-Lok handguard, aluminum, black, slim profile
• 7075-T6 aluminum upper receiver with M4 feed ramps, anodized finish
• 5.56 and .223 compatible bolt carrier group, 8620 alloy steel body, 9310 alloy steel bolt head, nitride finish
• AR-15 M4 aluminum charging handle, anodized finish
• SB Tactical SBA3 adjustable pistol stabilizing brace
• Mil-spec heavy-duty 6-position buffer tube
• 3 oz buffer
• Lower parts kit, recoil spring, end plate, and castle nut included
• Lower receiver not included

Perfect For

• Builders seeking a compact .223 Wylde pistol configuration with the SB Tactical SBA3 brace
• Those pairing an 11.5-inch KAK Industry barrel with a 12-inch MX10 M-Lok handguard
• Owners completing a stripped lower receiver with a full .223 Wylde pistol component set
• Those pairing a nitride government-profile barrel with a nitride bolt carrier group

Barrel and Handguard

The 11.5-inch KAK Industry barrel is constructed from 4140 CrMoV steel in a government profile with a nitride finish and a 1-in-8 twist rate. The thread pitch is 1-in-2x28 and the carbine-length gas system pairs with a 0.750 micro low-profile gas block positioned beneath the handguard. The 12-inch MX10 M-Lok handguard is made from aluminum in black with a slim profile and keeps the handguard clear of the barrel along its full length.

Upper Receiver and Bolt Carrier Group

The upper receiver is constructed from 7075-T6 aluminum with M4 feed ramps and an anodized finish. The bolt carrier group features an 8620 alloy steel body and a 9310 alloy steel bolt head, both with a nitride finish, and is compatible with 5.56, .223, .300, and .350 configurations. The included AR-15 M4 aluminum charging handle with an anodized finish pairs directly with the upper receiver and bolt carrier group.

SB Tactical SBA3 Pistol Brace and Buffer System

The SB Tactical SBA3 adjustable pistol stabilizing brace is included as the brace option for this pistol configuration. The mil-spec heavy-duty 6-position buffer tube pairs with the SBA3 brace for AR-15 and AR-style pistol configurations. The kit also includes a 3 oz buffer, a recoil spring, an end plate, and a castle nut.

Lower Components

This kit includes a lower parts kit, 3 oz buffer, recoil spring, end plate, and castle nut, providing the components needed to complete a stripped lower receiver. The lower receiver itself is not included.

Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws. Lower receiver not included.