Davidson Defense Cobblestone Prairie 10.5" 5.56 AR-15 Pistol Build Kit, M-Lok, w/ Shockwave Blade Brace

Davidson Defense Cobblestone Prairie 10.5" 5.56 NATO AR-15 Pistol Build Kit with Shockwave Blade Brace

Complete 5.56 NATO pistol build kit delivering a short-barreled platform with mil-spec reliability. This kit pairs a 10.5-inch 4150 CrMoV barrel with a 9-inch M-Lok handguard, carbine-length gas system, and all components needed to complete a lower receiver. The Shockwave Blade Pistol Arm Stabilizer Brace provides a stable shooting platform without requiring NFA registration. Lower receiver not included.

Key Features

• 10.5-inch 4150 CrMoV barrel with 1:7 twist rate and phosphate finish
• 9-inch 6061-T6 aluminum M-Lok handguard for accessory mounting
• Carbine-length stainless steel gas tube with micro low-profile gas block
• Complete mil-spec bolt carrier group in 9310 alloy steel with nitride finish
• Shockwave Blade Pistol Arm Stabilizer Brace for stable firing platform
• Full lower parts kit, buffer tube, buffer, recoil spring, castle nut, and end plate included
• AR-15 M4 charging handle and forward assist assembly
• A2 birdcage flash hider with crush washer

Perfect For

• Shooters building a compact 5.56 NATO platform for home defense or range use
• Builders looking for a complete upper and lower components kit minus the serialized receiver
• Pistol format shooters who want mil-spec reliability without custom parts hunting
• Those seeking a short-barreled 5.56 option with stabilizing brace support

Complete Kit Configuration

This is a full build kit containing all upper and lower components except the serialized lower receiver. The kit includes the bolt carrier group, charging handle, lower parts kit, buffer tube, buffer, recoil spring, castle nut, and end plate. Assembly requires a stripped lower receiver, which is sold separately. The 10.5-inch barrel with carbine-length gas system delivers reliable cycling in a compact form factor suited to close-quarters applications.

Barrel and Gas System

The 4150 CrMoV barrel features a government profile with 1:7 twist rate optimized for standard 5.56 NATO ammunition. The carbine-length gas tube paired with the micro low-profile gas block ensures proper cycling without over-gassing. The 1/2x28 thread pitch accepts standard AR-15 muzzle devices and suppressors when legally compliant.

Handguard and Accessory Mounting

The 9-inch M-Lok handguard provides multiple mounting points for tactical accessories without adding excessive weight or length. The 6061-T6 aluminum construction maintains durability while keeping the platform lightweight. M-Lok slots accept standard aftermarket rail sections and accessories for customization based on intended use.

Shockwave Blade Brace Platform

The Shockwave Blade Pistol Arm Stabilizer Brace attaches to the heavy-duty pistol buffer tube and provides a stable shooting platform. The brace design allows one-handed or two-handed firing configurations. The pistol format with brace support offers a legal alternative to traditional rifle stocks without NFA paperwork or tax stamps.

Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws. Lower receiver not included. Verify all local and state regulations regarding pistol braces and short-barreled platforms before assembly and use.