Davidson Defense Aegis w/Gauntlet Arms Brace 6-inch Pistol-Gas 1:7 .300 BLK AR-15 Freefloat M-Lok Handguard Pistol Full Build Kit

Aegis with Gauntlet Arms Brace 6-Inch Pistol .300 BLK AR-15 Full Build Kit

This is a complete .300 Blackout AR-15 pistol build kit designed for shooters who want a compact, controllable platform without the NFA paperwork. It pairs a 6-inch barrel with a 1:7 twist rate optimized for heavier subsonic ammunition, a free-float M-Lok handguard for accuracy, and a Gauntlet Arms polymer stabilizing brace for support. The kit includes everything except the lower receiver.

Key Features

• 6-inch .300 BLK barrel with 1:7 twist rate for subsonic loads
• Free-float M-Lok handguard for improved accuracy and modularity
• Premium 9310 alloy steel bolt carrier group with nitride finish
• Gauntlet Arms polymer stabilizing brace for control and support
• Steel flash can design muzzle device with 5/8x24 threads
• 3 oz buffer weight tuned for pistol-gas operation
• 7075 T6 aluminum upper receiver with anodized finish
• Lower receiver not included

Compact .300 BLK Pistol Platform

The 6-inch barrel delivers the ballistic advantages of .300 Blackout in a shorter, more maneuverable package. The 1:7 twist rate is specifically designed to stabilize heavier subsonic rounds, which is where .300 BLK truly excels. This configuration makes sense for anyone prioritizing compact handling without sacrificing the cartridge's inherent capabilities.

Free-Float Accuracy with M-Lok Modularity

The aircraft-grade aluminum handguard floats freely from the upper receiver, eliminating contact that would otherwise impact accuracy. M-Lok mounting slots run the full length, allowing you to attach lights, lasers, grips, or other accessories exactly where you need them. The handguard remains rigid under load while staying lightweight.

Gauntlet Arms Stabilizing Brace

The polymer brace provides a solid wrist support surface designed for pistol control and support. This is not a stock. The brace is configured to work with the pistol-gas upper and completes the kit as a functional platform without requiring lower receiver modifications.

Premium Bolt Carrier and Nitride Finish

The 9310 alloy steel bolt carrier group features a nitride finish for corrosion resistance and durability. This is a complete BCG ready to cycle, not a partial component. The 3 oz buffer weight is tuned specifically for the pistol-gas system and shorter dwell time of a 6-inch barrel.

Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws. Lower receiver not included. Verify brace legality in your jurisdiction before use.