Davidson Defense Recursion 8.3-inch 1:10 9MM AR-15 Freefloat M-Lok Handguard Pistol Upper Build Kit

9mm AR-15 Pistol Upper Build Kit | 8.3" Nitride Barrel | Davidson Defense Recursion | 1:10 Twist | M-Lok Handguard with Integrated Hand Stop

Delivering a compact and highly functional pistol setup, this Davidson Defense Recursion 9mm upper build kit provides precision engineering and versatile configuration. It features an 8.3" medium-profile nitrided barrel crafted from high-performance steel, with a 1:10 twist rate for optimal stabilization of 9mm rounds (9x19). The upper receiver is made from durable 7075 T6 aluminum, finished with an anodized coating and equipped with M4 feed ramps for reliable feeding with various 9mm ammunition types. A 7-inch freefloat M-Lok handguard constructed from lightweight 6061-T6 aluminum incorporates an integrated hand stop, ensuring a secure grip and enabling various accessory attachments. The build kit includes a 9mm flash hider (A2 birdcage style) with a thread pitch of 1/2x36 for effective muzzle control. Designed with precision, this upper kit is a practical choice for gunsmiths seeking versatility in their 9mm pistol builds.

Key Features

• 8.3" Nitrided Barrel | 9mm Chambering – High-performance steel with medium profile and 1:10 twist rate for optimal stabilization
• Upper Build Kit – Includes all upper components for streamlined assembly
• 7075 T6 Aluminum Upper Receiver – Anodized coating with M4 feed ramps for reliable feeding
• 7" Freefloat M-Lok Handguard – Lightweight 6061-T6 aluminum with integrated hand stop
• Integrated Hand Stop – Secure grip and improved control
• 9mm Flash Hider (A2 Birdcage Style) – 1/2x36 thread pitch for effective muzzle control
• Medium Profile Barrel – Balanced design for compact functionality
• Designed for Pistol-Caliber Builds – Optimized for 9mm ammunition

Perfect For

• Gunsmiths seeking versatility in their 9mm pistol builds
• Shooters looking for a compact, highly functional pistol setup
• Builders who value integrated hand stop and secure grip
• Home defenders demanding reliable feeding in a maneuverable package
• AR-15 owners seeking a precision-designed 9mm upper build kit

Integrated Hand Stop for Secure Grip

The 7-inch freefloat M-Lok handguard constructed from lightweight 6061-T6 aluminum incorporates an integrated hand stop, ensuring a secure grip and improved control during shooting. The integrated hand stop provides a consistent hand position, preventing the support hand from slipping forward toward the muzzle and improving overall shooting control and safety. The M-Lok interface enables various accessory attachments including lights, lasers, and grips, allowing for customized configuration. The freefloat design eliminates handguard contact with the barrel for improved accuracy and thermal management, while the lightweight construction keeps the overall build compact and maneuverable.

Nitrided Barrel for Optimal Stabilization

The 8.3" medium-profile nitrided barrel crafted from high-performance steel delivers exceptional durability and corrosion resistance for long-term performance. The nitride treatment penetrates the steel, providing superior wear resistance while maintaining dimensional accuracy and precision. The medium profile balances weight and rigidity for consistent performance in a compact package. With a 1:10 twist rate, this barrel provides optimal stabilization of 9mm rounds (9x19), ensuring reliable accuracy across various bullet weights commonly used in pistol-caliber carbine applications. The compact 8.3-inch length maximizes maneuverability without sacrificing terminal ballistics.

M4 Feed Ramps and Reliable Feeding

The upper receiver made from durable 7075 T6 aluminum with anodized coating is equipped with M4 feed ramps for reliable feeding with various 9mm ammunition types and bullet profiles. This enhancement is particularly valuable for 9mm AR-15 builds, where consistent feeding is critical to reliable function. The M4 feed ramps improve smooth feeding from magazine to chamber, reducing potential feeding issues and ensuring dependable operation. The anodized coating provides corrosion resistance and wear protection, while the forged aluminum construction ensures dimensional stability and long-term durability. The included 9mm flash hider (A2 birdcage style) with 1/2x36 thread pitch provides effective muzzle control.

Precision-Designed Upper Build Kit

This upper build kit includes all upper components needed for a compact and highly functional 9mm pistol setup: upper receiver with M4 feed ramps and anodized coating, 8.3" nitrided barrel with medium profile, 7-inch freefloat M-Lok handguard with integrated hand stop, and 9mm flash hider (A2 birdcage style) with 1/2x36 thread pitch. The combination of precision engineering, integrated hand stop for secure grip, and reliable feeding components creates a versatile platform ideal for home defense, range use, and pistol-caliber carbine applications. This upper kit is a practical choice for gunsmiths seeking functionality, control, and versatility in their 9mm pistol builds.

Disclaimer: This is an upper build kit including all upper components except the BCG and Charging Handle. Always follow safe handling practices and manufacturer instructions. Ensure compatibility with 9mm lower receivers and magazines. Ensure compliance with all applicable federal, state, and local laws regarding pistol uppers and barrel lengths. Verify proper installation of all components before use. Use ammunition appropriate for 9mm chambering only.