A precision-engineered platform for firearm customization, this Davidson Defense Recursion 9mm pistol full build kit delivers reliable accuracy and versatile configuration. Featuring an 8.3-inch 9mm nitrided barrel with medium profile and a 1:10 twist rate, this kit provides dependable performance with various 9mm ammunition types. The 4140 gun steel barrel is complemented by a black anodized upper receiver made from 7075 T6 aluminum for long-term durability. The freefloat M-Lok handguard crafted from 6061-T6 aluminum includes an integrated hand stop for improved ergonomics and secure grip. Accompanying components include a mil-spec charging handle and a nitride 9mm bolt carrier group made from 8620 alloy steel for reliable cycling. The Gauntlet Arms polymer stabilizing brace offers enhanced stability and shooter control, while the heavy-duty pistol buffer tube ensures optimal performance. A 9mm flash hider A2 birdcage rounds out the kit, making this Recursion full build kit a versatile choice for gunsmiths looking for a reliable 9mm AR-15 pistol build.
The Gauntlet Arms polymer stabilizing brace offers enhanced stability and shooter control in a lightweight, durable design. This brace improves accuracy and comfort during shooting, making the 9mm pistol platform more controllable and enjoyable to shoot. The polymer construction keeps weight manageable while providing the rigidity needed for consistent performance. Paired with the heavy-duty pistol buffer tube, this system ensures optimal performance and reliable operation optimized for 9mm blowback operation, providing smooth cycling and proper function. The combination delivers the support needed for accurate shooting in a compact platform.
The 8.3-inch 9mm nitrided barrel with medium profile made from 4140 gun 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 reliable accuracy with various 9mm ammunition types, stabilizing a wide range of bullet weights commonly used in pistol-caliber carbine applications. The 4140 gun steel construction ensures the strength needed for dependable 9mm operation.
The freefloat M-Lok handguard crafted from 6061-T6 aluminum includes an integrated hand stop for improved ergonomics and secure grip control. The integrated hand stop provides a consistent hand position, preventing forward slippage and improving overall shooting control and safety. The M-Lok interface allows for versatile accessory mounting of lights, lasers, and other attachments. The black anodized upper receiver made from 7075 T6 aluminum provides long-term durability and corrosion resistance. The nitride 9mm bolt carrier group made from 8620 alloy steel delivers reliable cycling and dependable function, while the mil-spec charging handle ensures consistent operation.
This full build kit includes everything needed for a reliable 9mm AR-15 pistol build except the lower receiver: upper receiver with black anodized finish, 8.3-inch nitrided barrel made from 4140 gun steel, freefloat M-Lok handguard with integrated hand stop, nitride 9mm bolt carrier group made from 8620 alloy steel, mil-spec charging handle, 9mm flash hider A2 birdcage for effective muzzle control, and lower parts kit including Gauntlet Arms polymer stabilizing brace and heavy-duty pistol buffer tube. The combination of precision-engineered components, improved ergonomics, and enhanced stability creates a versatile platform ideal for home defense, range use, and pistol-caliber carbine applications. This Recursion full build kit is an excellent choice for gunsmiths seeking reliable accuracy and customization options in their 9mm pistol builds.
Disclaimer: This kit includes all necessary parts except the lower receiver. Ensure compatibility with 9mm lower receivers and magazines. Always follow safe handling practices and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws regarding pistol builds and stabilizing braces. Verify proper installation of all components before use. Use ammunition appropriate for 9mm chambering only.
Caliber: 9mm (9x19)
Barrel: 8.3" 9MM AR-15/AR-9 Nitrided Barrel, Medium Profile, 1/2x36, 1:10T
Barrel Length: 8.3 inches
Barrel Material: 4140 Gun Steel
Barrel Finish: Nitride
Barrel Profile: Medium
Barrel Twist Rate: 1:10
Barrel Thread Pitch: 1/2x36
Handguard Material: 6061-T6 Aluminum
Handguard Color: Black
Handguard Style: Free Float with Integrated Hand Stop
Upper Receiver: AR-15 Upper Receiver
Upper Receiver Material: 7075 T6 Aluminum
Upper Receiver Finish: Anodized
Charging Handle: AR-15 Mil-Spec
Bolt Carrier: 9MM Nitride Bolt Carrier Group
Bolt Carrier Material: 8620 Alloy Steel
Bolt Carrier Finish: Nitride
Pistol Brace: Gauntlet Arms Polymer Stabilizing Brace
Pistol Brace Material: High-Strength Polymer
Pistol Brace Color: Black
Buffer Tube Kit: Heavy Duty Pistol Buffer Tube for AR-15 and AR Style Pistols
Muzzle Device: 9mm Flash Hider A2 Birdcage
Muzzle Thread Pitch: 1/2x36
Gas System: Pistol Caliber Gas Key
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