Davidson Defense Warden Duty 16-inch 1:10 9MM AR-9 Freefloat Keymod Handguard Rifle Complete Upper Build

Davidson Defense Warden Duty AR-9 Complete Upper - 16-inch 9mm 1:10 Freefloat KeyMod Handguard

The Davidson Defense Warden Duty is an AR-9 complete upper chambered in 9mm with a 16-inch barrel. The complete upper includes the upper receiver, barrel, handguard, bolt carrier group, and charging handle. The AR-9 platform operates via blowback. A bolt carrier group and charging handle are included.

Key Features

• 16-inch 4150 Chrome Moly Vanadium steel barrel
• Nitride barrel finish
• 1:10 twist rate
• 1-in-2x36 thread pitch
• 7075-T6 aluminum upper receiver with M4 feed ramps, anodized finish
• 15-inch freefloat KeyMod handguard in aluminum
• 9mm nitride bolt carrier group in 8620 alloy steel
• Mil-spec M4 charging handle
• 9mm A2 birdcage flash hider, 1-in-2x36 thread pitch

Perfect For

• AR-9 rifle builders sourcing a complete upper in 9mm
• Builders pairing a 16-inch AR-9 upper with a stripped lower receiver
• Shooters running a freefloat KeyMod handguard on an AR-9 build
• Builders looking for a complete upper with bolt carrier group included

Barrel and Upper Receiver

The 16-inch barrel is 4150 Chrome Moly Vanadium steel with a nitride finish and a 1:10 twist rate. The muzzle is threaded at 1-in-2x36 and pairs with the included 9mm A2 birdcage flash hider. The upper receiver is 7075-T6 aluminum with M4 feed ramps and an anodized finish, serving as the core front end structure for the AR-9 build. M4 feed ramps support reliable cartridge feeding from the magazine into the chamber. The AR-9 platform operates via blowback.

Handguard

The 15-inch freefloat KeyMod handguard is aluminum in black, providing a clean forend with KeyMod accessory slots for lights, grips, and other attachments across the full handguard length. The handguard extends beyond the 16-inch barrel length, with the muzzle device providing the necessary clearance past the handguard.

Bolt Carrier Group and Charging Handle

The included 9mm bolt carrier group is built from 8620 alloy steel with a nitride finish. This BCG is the correct unit for AR-9 blowback-operated configurations. The mil-spec M4 charging handle completes the upper component set.

Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws.