Davidson Defense Ronin Competition 4.5-inch 1:10 9MM AR-9 Freefloat M-Lok Handguard Pistol Full Build Kit, SBR Ready

Davidson Defense Ronin Competition 4.5 Inch 9MM AR-9 Freefloat M-Lok Handguard Pistol Full Build Kit SBR Ready

The Davidson Defense Ronin Competition delivers a complete AR-9 pistol platform in an SBR ready configuration with precision billet construction. Featuring a 4.5 inch barrel with 1 in 10 twist rate crafted from 4150 Chrome Moly Vanadium steel with nitride finish, this kit balances compact dimensions with enhanced longevity and reliable 9MM performance. The Black Diamond Series upper receiver constructed from 6061-T6 billet aluminum ensures strength, tight tolerances and reliability. The Ace Series M-Lok freefloat handguard optimizes weight distribution while allowing modular accessory attachments. A 9MM nitride bolt carrier group delivers smooth cycling with reduced friction. Essential components include carbine buffer and complete mil-spec lower parts kit providing all necessary elements for assembly. An included 9MM flash hider completes the package. Black finish throughout maintains consistent appearance. This full build kit maximizes AR-9 capabilities while maintaining a compact profile.

Key Features

• 4.5 inch 4150 Chrome Moly Vanadium barrel with nitride finish and 1 in 10 twist
• Black Diamond Series billet upper receiver from 6061-T6 aluminum
• Ace Series M-Lok freefloat handguard for optimized weight distribution
• 9MM nitride BCG with complete mil-spec lower parts kit and carbine buffer
• 9MM flash hider included with black finish throughout

Perfect For

• Builders creating complete 9MM AR-9 pistols from stripped lowers
• Shooters planning future SBR configuration options
• Users needing comprehensive component kits with billet precision
• Builds requiring both upper and complete lower parts

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.

Complete Lower Parts Kit

The mil-spec lower parts kit includes trigger group, safety selector, magazine catch, bolt catch and other components needed to complete a stripped lower receiver. This comprehensive kit eliminates sourcing individual lower parts from multiple suppliers. Mil-spec dimensions ensure compatibility with standard AR-15 lower receivers. The included carbine buffer provides appropriate reciprocating mass for 9MM blowback operation. Complete lower parts allow builders to assemble functional pistols from stripped receivers.

Billet Upper Precision

The Black Diamond Series billet upper receiver is machined from solid 6061-T6 aluminum stock for tight tolerances and enhanced precision. Billet construction allows precise dimensional control that supports consistent lockup and accuracy potential. The premium machining delivers a receiver suitable for competitive applications where reliability matters. Billet construction combined with nitride barrel treatment creates a foundation for accurate 9MM performance.

Ace Series Handguard Integration

The Ace Series M-Lok freefloat handguard optimizes weight distribution while providing modular mounting capability. Freefloat design isolates the barrel from external contact, supporting accuracy by preventing shifts in point of impact. M-Lok slots allow direct accessory mounting without bulky rail sections. The handguard design balances strength with minimal weight for comfortable handling during extended shooting sessions. Weight optimization contributes to the overall compact profile of the build.

Follow safe handling and manufacturer instructions

Ensure compliance with all applicable laws

Ships without a brace

Do not install a stock unless compliant