Davidson Defense Gyas 16-inch 1:10 9mm AR-9 Freefloat Tubular M-Lok Handguard Rifle Upper Build Kit

Gyas 16-Inch 1:10 9mm AR-9 Freefloat Tubular M-LOK Handguard Rifle Upper Build Kit

This is a complete 16-inch 9mm AR-9 upper build kit built on a 7075-T6 aluminum receiver with a 416R stainless steel barrel and freefloat tubular M-LOK handguard. The kit delivers precision performance for 9mm shooters who want a reliable upper assembly without the bolt carrier group or charging handle.

Key Features

• 416R stainless steel barrel with 1:10 twist rate for 9mm ammunition
• Freefloat tubular M-LOK handguard with 1.77-inch internal diameter for accessory mounting
• 7075-T6 aluminum upper receiver with M4 feed ramps and black anodized finish
• 9mm A2 birdcage flash hider with 1/2x36 thread pitch
• Suppressor-ready handguard design
• AR-15 forward assist and ejection port door assembly included

Perfect For

• Shooters building custom 9mm AR platforms from stripped lower receivers
• Budget-conscious builders who want quality components without premium pricing
• Those seeking a reliable direct blowback 9mm upper with modular handguard compatibility
• Precision-focused shooters valuing freefloat barrel accuracy

Upper Build Kit Breakdown

This upper assembly combines a precision-machined 416R stainless steel barrel with a rigid freefloat design that isolates the barrel from handguard contact. The 1:10 twist rate stabilizes standard 9mm projectiles across the typical velocity range. The tubular M-LOK handguard provides multiple mounting points while maintaining a compact 1.77-inch internal diameter for suppressor clearance and accessory integration.

Suppressor-Ready Design

The handguard is engineered with suppressor compatibility in mind. The internal diameter and barrel profile support both direct-thread and quick-detach suppressor mounting without obstruction. The 9mm A2 birdcage flash hider is threaded 1/2x36, the standard for 9mm platforms, allowing easy suppressor installation when desired.

Direct Blowback Operation

This upper uses a direct blowback system common to 9mm AR platforms. The 416R stainless steel barrel withstands the cycling pressures of direct blowback operation while maintaining dimensional stability for accuracy. The included ejection port door and forward assist assembly support reliable cycling and brass ejection.

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