Davidson Defense Backstop w/Gauntlet Arms Brace 7.5-inch 1:10 9MM AR-9 Freefloat M-Lok Handguard Pistol Full Build Kit

Davidson Defense Backstop with Gauntlet Arms Brace 7.5 Inch AR-9 Pistol Full Build Kit

The Davidson Defense Backstop with Gauntlet Arms Brace delivers robust performance in a compact AR-9 pistol platform. Featuring an Akali 7.5 inch barrel with 1 in 10 twist rate constructed from durable 4150 CrMoV steel with phosphate coating, this kit balances extremely compact dimensions with reliable 9MM ballistics. Threaded 1/2x36 for compatibility with various 9MM muzzle devices and accessories. The upper receiver crafted from anodized 7075-T6 aluminum provides strength and corrosion resistance. A 7 inch freefloat M-Lok handguard made from 6061-T6 aluminum provides versatile accessory mounting options on multiple positions. The included 9MM nitride bolt carrier group operates reliably with both Glock and Colt magazines for flexible feeding options. The polymer Gauntlet Arms stabilizing brace provides support while keeping weight minimal. All components work together to deliver a high performance setup for varied shooting applications. This full build kit provides coordinated components for complete AR-9 pistol assembly.

Key Features

• 7.5 inch 4150 CrMoV barrel with phosphate coating and 1 in 10 twist
• 7075-T6 aluminum upper receiver with anodized finish
• 7 inch freefloat M-Lok handguard from 6061-T6 aluminum
• 9MM nitride BCG compatible with Glock and Colt magazines with Gauntlet Arms brace
• 1/2x36 threads for 9MM muzzle device compatibility

Perfect For

• Builders seeking extremely compact 9MM AR-9 pistol platforms
• Shooters needing dual magazine compatibility with Glock and Colt systems
• Users prioritizing close quarters dimensions with stabilizing brace support
• Builds requiring coordinated upper and lower pistol components

Extreme Compact Dimensions

The 7.5 inch barrel length provides extremely compact overall dimensions ideal for close quarters applications, vehicle use and confined spaces. Phosphate coating offers reliable corrosion protection through a proven finish used across military and commercial firearms. The 1 in 10 twist rate stabilizes the full range of common 9MM bullet weights without overstabilization concerns. Compact length also reduces overall pistol weight for comfortable extended handling and rapid transitions.

Dual Magazine System Versatility

The 9MM nitride bolt carrier group operates reliably with both Glock pattern and Colt pattern magazines, providing flexibility in magazine selection based on availability, cost or personal preference. This dual compatibility eliminates commitment to a single magazine ecosystem during build planning. Shooters can take advantage of either system without modification or adapter requirements. The BCG design accommodates dimensional differences between magazine types seamlessly for reliable feeding.

Gauntlet Arms Brace

The Gauntlet Arms polymer stabilizing brace provides a stable shooting platform while keeping weight minimal in the compact configuration. 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 already compact 9MM build.

Freefloat M-Lok Versatility

The 7 inch freefloat M-Lok handguard isolates the barrel from external contact, supporting accuracy by preventing shifts in point of impact from grip pressure or mounted accessories. M-Lok slots provide direct mounting for lights, grips and other devices without additional rail sections adding weight. The 6061-T6 aluminum construction balances strength with manageable weight. The handguard length covers most of the compact barrel while leaving muzzle device access clear for installation.

Follow safe handling and manufacturer instructions

Ensure compliance with all applicable laws

Verify lower receiver magazine compatibility with selected system

Confirm ammunition type is 9MM before use