Davidson Defense Ronin Competition w/SBA5 Brace 4.5-inch 1:10 9MM AR-9 Freefloat M-Lok Handguard Pistol Full Build Kit

Davidson Defense Ronin Competition with SBA5 Brace 4.5 Inch 9MM AR-9 Full Build Kit

The Davidson Defense Ronin Competition with SBA5 Brace delivers a compact and efficient 9MM AR-9 pistol platform with precision billet construction and modern stabilization. Featuring a 4.5 inch barrel constructed from 4150 Chrome Moly Vanadium with 1 in 10 twist rate and nitride finish, this kit balances compact dimensions with reliable 9MM performance and durability. The Black Diamond Series AR-15 slick side billet upper receiver crafted from 6061-T6 billet aluminum with Type III hard anodized finish provides exceptional surface protection and tight tolerances. The Ace Series 4 inch M-Lok freefloat handguard designed from aircraft grade aluminum allows modularity and lightweight maneuverability. The 9MM nitride bolt carrier group is compatible with both Glock and Colt magazines for versatile feeding options. The SB Tactical SBA5 pistol stabilizing brace provides adjustable stability and control. Additional components include mil-spec buffer tube, standard AR-15 carbine recoil spring and 9MM A2 birdcage flash hider. This complete build kit delivers a reliable custom pistol solution.

Key Features

• 4.5 inch 4150 Chrome Moly Vanadium barrel with nitride finish and 1 in 10 twist
• Black Diamond Series slick side billet upper from 6061-T6 aluminum with Type III hard anodizing
• Ace Series 4 inch M-Lok freefloat handguard from aircraft grade aluminum
• 9MM nitride BCG compatible with Glock and Colt magazines with SB Tactical SBA5 brace
• Mil-spec buffer tube with carbine recoil spring and 9MM A2 birdcage flash hider

Perfect For

• Builders seeking complete kits with latest SBA5 brace technology
• Shooters needing dual magazine compatibility with Glock and Colt systems
• Users prioritizing aircraft grade aluminum and billet construction
• Builds requiring coordinated upper and lower pistol components

SB Tactical SBA5 Brace

The SB Tactical SBA5 represents the latest evolution in pistol stabilizing brace design with five position adjustability. The design improves on earlier models with enhanced surface area and refined geometry for improved stability and control. Multiple adjustment positions accommodate different shooting scenarios, user sizes and equipment configurations. SB Tactical engineering ensures the brace withstands repeated adjustments and recoil forces. The SBA5 provides modern stabilization capability suitable for competitive and tactical applications.

Dual Magazine System Compatibility

The 9MM nitride bolt carrier group functions 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 with varied ammunition.

Aircraft Grade Handguard

The Ace Series 4 inch M-Lok freefloat handguard crafted from aircraft grade aluminum provides exceptional strength to weight ratio. Freefloat design isolates the barrel from external contact, supporting accuracy by preventing shifts in point of impact. M-Lok slots allow direct mounting for lights, grips and other devices without additional rail sections. Aircraft grade specification ensures the handguard withstands the demands of competitive shooting and training while keeping weight minimal for extended handling comfort.

Complete Build Kit Integration

This full build kit includes upper receiver, barrel, handguard, bolt carrier group, charging handle, brace, buffer components and muzzle device as a coordinated package. Component compatibility is ensured through Davidson Defense quality control and engineering. The complete approach eliminates sourcing individual parts from multiple suppliers and removes guesswork about component matching. Builders receive everything needed for complete AR-9 pistol upper and lower assembly ready for function testing.

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