Davidson Defense Line Drawn w/Gauntlet Arms Brace 10.5-inch Carbine-Gas 1:8 5.56 NATO AR-15 FSB Carbine-Length Quad-Rail Handguard Pistol Full Build Kit

Davidson Defense Line Drawn with Gauntlet Arms Brace 10.5 Inch Carbine Gas 5.56 NATO AR-15 Full Build Kit

The Davidson Defense Line Drawn with Gauntlet Arms Brace delivers precision and reliability in a complete compact AR-15 pistol platform. Featuring a 10.5 inch barrel crafted from 4150 Chrome Moly Vanadium with nitride finish, this kit balances compact dimensions with durable 5.56 NATO performance. The 1 in 8 twist rate provides optimal stability with a variety of 5.56 NATO ammunition from 55 grain through 77 grain. A carbine length gas system ensures smooth operation in the short barrel configuration. The A2 upper receiver made from 7075-T6 aluminum with black anodized finish provides strength and corrosion resistance. A quad rail handguard constructed from 6061-T6 aluminum offers ample rail space on all four sides for mounting lights, grips and other accessories, enhancing versatility across shooting applications. The complete bolt carrier group manufactured from nitride finished 9310 alloy steel delivers reliable cycling and extended service life. The polymer stabilizing brace from Gauntlet Arms provides support while maintaining manageable weight. This full build kit delivers coordinated components for complete AR-15 pistol assembly.

Key Features

• 10.5 inch 4150 Chrome Moly Vanadium barrel with nitride finish and 1 in 8 twist
• A2 upper receiver from 7075-T6 aluminum with black anodized finish
• Quad rail handguard from 6061-T6 aluminum for extensive accessory mounting
• Nitride finished 9310 alloy steel bolt carrier group with Gauntlet Arms polymer brace
• Carbine length gas system for reliable operation

Perfect For

• Builders seeking complete AR-15 pistol kits with traditional quad rail capability
• Shooters prioritizing extensive accessory mounting options
• Users needing compact configurations with stabilizing brace support
• Builds requiring coordinated upper and lower pistol components

9310 Alloy Steel BCG

The bolt carrier group manufactured from 9310 alloy steel provides enhanced strength and toughness compared to standard carbon steel alternatives. This material choice offers superior fatigue resistance for high round count applications. Nitride finish on the BCG creates a hard, low friction surface that reduces wear and simplifies cleaning. The coating allows operation with less lubrication while protecting against corrosion. 9310 alloy construction combined with nitride treatment delivers a BCG built for demanding use.

Quad Rail Versatility

The quad rail handguard provides Picatinny rail surfaces on all four sides for maximum accessory mounting flexibility. This traditional design accommodates lights, lasers, vertical grips, pressure switches and other devices without adapter requirements. The 6061-T6 aluminum construction balances strength with manageable weight for extended handling. Extensive rail coverage allows complete customization based on mission requirements, training scenarios or personal preferences without mounting limitations.

Carbine Gas System Operation

The carbine length gas system positions the gas port to provide appropriate dwell time for reliable cycling in the 10.5 inch barrel configuration. This system ensures consistent function with quality 5.56 NATO ammunition across varied pressure ranges. The carbine gas system represents proven technology refined through decades of use in short barrel AR-15 platforms. Proper gas system timing supports reliable extraction, ejection and feeding for consistent performance.

Gauntlet Arms Brace

The Gauntlet Arms polymer stabilizing brace provides a stable shooting platform while keeping weight minimal. Polymer construction resists impact and environmental wear while maintaining structural integrity. The brace design fits securely on pistol buffer tubes for consistent positioning during shooting. High strength polymer formulation ensures durability through repeated use and recoil forces without adding excessive bulk to the compact build.

Follow safe handling and manufacturer instructions

Ensure compliance with all applicable laws

Verify proper assembly of all components before use

Confirm ammunition type is 5.56 NATO before firing