Davidson Defense Backstop 7.5-inch 1:10 9MM AR-9 Freefloat M-Lok Handguard Pistol Full Build Kit, SBR Ready

Davidson Defense Backstop 7.5 Inch 9MM AR-9 Freefloat M-Lok Handguard Pistol Full Build Kit SBR Ready

The Davidson Defense Backstop delivers a compact and efficient AR-9 pistol platform in an SBR ready configuration. Featuring a 7.5 inch Akali barrel chambered in 9MM constructed from durable 4150 CrMoV steel with phosphate finish, this kit balances extremely compact dimensions with reliable performance. The 1 in 10 twist rate ensures reliable stabilization of 9MM ammunition from 115 grain through 147 grain. A lightweight 6061-T6 aluminum freefloat handguard designed with an integrated hand stop features Type II hard coat anodization for enhanced durability. M-Lok attachment system provides versatile accessory mounting on multiple positions. A 9MM flash hider with A2 birdcage design and 1/2x36 threads manages muzzle flash effectively. The 9MM nitride bolt carrier group made from 8620 alloy steel completes this build with a 5.5 ounce buffer weight for smooth operation. This full build kit delivers a compact AR-9 pistol platform for various shooting applications.

Key Features

• 7.5 inch 4150 CrMoV barrel with phosphate finish and 1 in 10 twist
• Lightweight 6061-T6 aluminum freefloat handguard with integrated hand stop and Type II hard coat anodization
• 9MM nitride BCG from 8620 alloy steel with 5.5 ounce buffer weight
• 9MM A2 birdcage flash hider with 1/2x36 threads
• M-Lok attachment system for versatile accessory mounting

Perfect For

• Builders creating complete 9MM AR-9 pistols with future SBR options
• Shooters seeking extremely compact dimensions for close quarters applications
• Users prioritizing Type II anodizing durability with integrated hand stop
• Builds requiring both upper and complete lower components

SBR Ready Configuration

Ships without a brace and is intended for customers selecting their own final setup based on configuration preferences and applicable laws. This approach provides flexibility for builders who may choose to add a brace, plan future SBR registration, or configure the pistol according to their specific requirements. Follow applicable laws and do not install a stock unless compliant with regulations.

Type II Hard Coat Anodization

The freefloat handguard features Type II hard coat anodization that provides enhanced durability compared to standard anodizing finishes. This coating resists wear and corrosion through extended use and harsh environmental conditions. The integrated hand stop provides a positive reference point for consistent hand placement during shooting. Type II anodization combined with the integrated hand stop delivers a handguard built for demanding use while maintaining lightweight construction.

8620 Alloy Steel BCG

The 9MM nitride bolt carrier group manufactured from 8620 alloy steel provides the strength and toughness needed for reliable blowback operation. This material choice offers superior properties compared to standard carbon steels with enhanced fatigue resistance. Nitride finish creates a hard, low friction surface that reduces wear and simplifies cleaning. The 5.5 ounce buffer weight is specifically selected for smooth operation with 9MM blowback systems, reducing bolt velocity and impact forces.

Extreme Compact Platform

The 7.5 inch barrel length provides extremely compact overall dimensions ideal for close quarters applications, vehicle use and confined spaces. Phosphate finish offers reliable corrosion protection through a proven coating. The 1 in 10 twist rate stabilizes the full range of common 9MM bullet weights. Lightweight freefloat handguard with M-Lok versatility supports varied accessory configurations without excessive weight addition. This combination delivers a compact AR-9 platform suitable for various shooting applications.

Follow safe handling and manufacturer instructions

Ensure compliance with all applicable laws

Ships without a brace

Confirm ammunition type is 9MM before firing