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

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

The Jet Spur 7.5-inch pistol build delivers a compact, maneuverable platform on the AR-15 with a gas system optimized for the shorter barrel length. This full build kit includes everything except the lower receiver: a stainless steel barrel, mil-spec upper receiver, freefloat M-Lok handguard, bolt carrier group, charging handle, buffer tube, buffer, recoil spring, castle nut, end plate, and a Gauntlet Arms polymer stabilizing brace. The gas block is sized for the 0.75-inch barrel diameter, and the setup runs 5.56 NATO ammunition with a 1:7 twist rate that stabilizes a wide range of bullet weights.

Key Features

• 7.5-inch 416R stainless steel barrel with 1:7 twist rate for 5.56 NATO
• Mil-spec upper receiver with M4 feedramps, 7075 T6 aluminum construction
• Freefloat M-Lok aluminum handguard in black for accessory mounting
• Micro low-profile gas block sized for 0.75-inch barrel diameter
• Gauntlet Arms polymer stabilizing brace for controlled handling
• Bolt carrier group in 9310 alloy steel with nitride finish
• Mil-spec charging handle and A2 flash hider with 1/2x28 threads

Perfect For

• Shooters building a compact 5.56 platform for home defense or tactical training
• Builders seeking a complete upper and lower parts assembly minus the serialized receiver
• Users who want a freefloat handguard for precision and accessory flexibility
• Pistol configurations requiring a short, maneuverable profile

Compact Barrel Performance

The 7.5-inch barrel length with pistol-length gas system is engineered for the shorter dwell time inherent to compact builds. Stainless steel construction resists corrosion while the 1:7 twist rate handles bullet weights from 55 grains to heavier rounds effectively. The gas block is precisely sized to the 0.75-inch barrel diameter, ensuring reliable cycling without over-gassing or under-gassing the system.

Handguard and Accessory Mounting

The freefloat M-Lok aluminum handguard isolates the barrel from external pressure, improving shot-to-shot consistency. M-Lok slots accept standard tactical accessories, allowing you to configure the platform for optics, lights, or other tactical equipment. The black anodized finish provides a clean appearance and durability.

Gauntlet Arms Brace Integration

The Gauntlet Arms polymer stabilizing brace provides controlled handling characteristics for a pistol-configured platform. The brace is designed to stabilize the firearm during use without adding unnecessary weight or bulk to the compact profile.

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