Davidson Defense Jet Spur 7.5" Stainless 5.56 NATO AR-15 Pistol Build Kit, M-Lok Handguard, w/ SBA5 Brace

Jet Spur 7.5" Stainless 5.56 NATO AR-15 Pistol Build Kit, M-Lok Handguard, w/ SBA5 Brace

This is a complete AR-15 pistol build kit designed for 5.56 NATO performance in a compact 7.5-inch platform. The kit includes everything needed to assemble a functional pistol except the serialized lower receiver. The Jet Spur configuration pairs a lightweight freefloat handguard with a pistol-length gas system, optimized for rapid cycling and minimal recoil impulse in a short-barreled format.

Key Features

• 7.5-inch 416R stainless steel barrel with 1:7 twist rate, optimized for 5.56 NATO
• Freefloat 7-inch M-Lok handguard for modular accessory mounting
• SB Tactical SBA5 pistol stabilizing brace with nylon reinforced polymer construction
• Complete bolt carrier group in 9310 alloy steel with nitride finish
• Mil-spec charging handle and 6-position buffer tube with 3 oz buffer
• Micro low-profile gas block with 0.75 O.D. barrel steel construction
• M4 feed ramps in 7075 T6 aluminum upper receiver

Perfect For

• Shooters building a compact 5.56 NATO pistol platform
• Users prioritizing maneuverability in confined spaces
• Builders seeking a complete kit with minimal additional purchases
• Those wanting a freefloat handguard for improved accuracy potential

Jet Spur Platform Design

The Jet Spur represents a purpose-built pistol configuration. The 7.5-inch barrel length paired with pistol-gas cycling creates a compact footprint while maintaining reliable operation with standard 5.56 NATO ammunition. The 1:7 twist rate stabilizes a wide range of bullet weights, making this platform flexible for different ammunition preferences. The freefloat handguard design isolates the barrel from external pressure, which helps maintain shot-to-shot consistency.

SBA5 Stabilizing Brace Integration

The SB Tactical SBA5 brace provides a secure attachment point and wrist support for pistol-format operation. The nylon reinforced polymer construction offers durability while keeping overall weight manageable. The brace is engineered to work with the mil-spec buffer tube included in this kit, ensuring proper fitment without additional components.

Freefloat Handguard and Accessory Ecosystem

The 7-inch M-Lok handguard uses a freefloat design, meaning it does not contact the barrel. This isolation reduces harmonic vibration and helps maintain barrel consistency shot to shot. The M-Lok mounting system provides standardized slots for tactical accessories, lights, and other modular components. The aluminum construction keeps weight low while maintaining rigidity.

Component Compatibility and Assembly

This full build kit includes the upper assembly, bolt carrier group, charging handle, lower parts kit, buffer tube, buffer, recoil spring, end plate, and castle nut. The lower receiver is not included. All components use standard AR-15 specifications and mil-spec dimensions, ensuring compatibility with standard lower receivers. The 1/2x28 muzzle thread pitch matches common suppressor and muzzle device standards.

Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws. Lower receiver not included. BCG and charging handle are included with this full build kit.