Alligata 9mm Upper

Alligata 9mm Upper

The Alligata 9mm upper delivers reliable 9x19 performance in a compact AR-15 platform. This complete upper pairs a 16.5-inch 4150 CrMoV nitride barrel with a 15-inch M-Lok handguard, giving you a balanced setup for target shooting, training, or defensive applications.

Key Features

• 16.5-inch 4150 CrMoV barrel with nitride finish for corrosion resistance
• 1:10 twist rate optimized for 9mm projectile stability
• 15-inch M-Lok handguard for mounting flexibility and ergonomic control
• 6061-T6 anodized upper receiver for durability
• A2 flash hider with crush washer included
• Ejection port door, rod, and spring included
• 1/2x36 threading for standard 9mm suppressors and muzzle devices

Design Intent

This upper is built for shooters who value the ergonomics of the AR-15 platform but prefer the softer recoil and lower ammunition cost of 9mm. The 16.5-inch barrel length balances velocity and handling, while the nitride finish ensures the barrel resists corrosion during extended shooting sessions or storage.

Component Compatibility

The Alligata upper accepts standard AR-15 lower receivers with 9mm magazine compatibility. Verify your lower receiver is configured for 9mm feeding before assembly. The 1/2x36 threading supports most common 9mm suppressors and muzzle devices currently available.

What You Need to Know

The M-Lok handguard gives you mounting options for lights, lasers, or grips without the need for rail adapters. The included flash hider reduces muzzle signature, which is useful for indoor range shooting or low-light scenarios. This is a complete upper assembly, so you'll need a compatible lower receiver to complete your build. Bolt carrier group and charging handle are not included with this upper.

Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws. BCG and charging handle are not included.