Offering robust construction and versatile customization options for serious gunsmiths, this Davidson Defense Aftershock 9mm pistol upper build kit delivers reliable performance in a compact package. It features an 8.3-inch medium profile barrel made from high-performance steel with nitride finish for improved durability and corrosion resistance. The barrel has a 1:10 twist rate and a 1/2x36 thread pitch, compatible with 9mm muzzle devices and accessories. The upper receiver is made of anodized 7075 T6 aluminum and includes M4 feed ramps for reliable feeding with various 9mm ammunition types. The 7-inch freefloat M-Lok handguard made from lightweight aluminum facilitates M-Lok accessory attachment for configuration flexibility. The kit is equipped with a 9mm flash hider A2 birdcage muzzle device threaded at 1/2x36. This upper build kit combines precision engineering with the freedom to customize, ideal for building a compact and efficient AR-15 pistol platform chambered in 9mm.
The 8.3-inch medium profile barrel made from high-performance steel with nitride finish delivers improved 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, providing consistent accuracy without adding unnecessary bulk to this compact platform. With a 1:10 twist rate, this barrel is optimized for 9mm ammunition, stabilizing a wide range of bullet weights commonly used in pistol-caliber carbine applications. The 1/2x36 thread pitch ensures compatibility with 9mm-specific muzzle devices and accessories.
The 7075 T6 aluminum upper receiver with anodized finish includes 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 work to ensure smooth ammunition feeding from the magazine to the chamber, reducing potential feeding issues and improving overall reliability. The anodized finish provides corrosion resistance and wear protection, while the forged aluminum construction ensures dimensional stability and long-term durability for this pistol-caliber platform.
The 7-inch freefloat M-Lok handguard made from lightweight aluminum facilitates M-Lok accessory attachment for configuration flexibility. The M-Lok interface provides secure mounting for lights, lasers, grips, and other attachments exactly where you need them, allowing for customized configuration to match your intended application. The freefloat design eliminates handguard contact with the barrel for improved accuracy and thermal management, while the lightweight construction keeps the overall build maneuverable and balanced. The 7-inch length provides ample mounting space while maintaining a compact profile ideal for close-quarters applications.
This upper build kit includes all upper components needed for building a compact and efficient AR-15 pistol platform chambered in 9mm: upper receiver with M4 feed ramps and anodized finish, 8.3-inch nitride-finished barrel with medium profile, 7-inch freefloat M-Lok handguard, and 9mm flash hider A2 birdcage muzzle device threaded at 1/2x36 for reduced muzzle signature. The combination of robust construction, reliable feeding components, and versatile customization options creates a platform ideal for home defense, range use, and pistol-caliber carbine applications. This kit combines precision engineering with the freedom to customize, making it an excellent choice for serious gunsmiths building a 9mm AR-15 pistol platform.
Disclaimer: This is an upper build kit including all upper components. 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.
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: High Performance Steel
Barrel Finish: Nitride
Barrel Profile: Medium Profile
Barrel Twist Rate: 1:10
Barrel Thread Pitch: 1/2x36
Upper Receiver: AR-15 Upper Receiver, M4 Feed ramps, 7075 T6 Aluminum, Anodized
Upper Receiver Material: 7075 T6 Aluminum
Upper Receiver Finish: Anodized
Handguard Material: Aluminum
Handguard Color: Black
Handguard Style: 7-inch Free Float M-Lok Super Light Series
Muzzle Device: 9mm Flash Hider A2 Bird Cage 1/2-36
Muzzle Thread Pitch: 1/2x36
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