Comstock Armory 9mm Bore Compact Flash Hider 5/8x24 - Plan B Suppressor Mount

Comstock Armory 9mm Bore Compact Flash Hider 5/8x24 - Plan B Suppressor Mount

The Comstock Armory FHC Compact Flash Hider is a precision-engineered solution for shooters who demand stealth, suppressor compatibility, and long-term durability. Unlike traditional flash hiders, the FHC is designed to redirect expanding gases outward—dramatically reducing blast baffle wear and extending the life of your suppressor.

Compatible with popular .900″-24 adapters like the Comstock LPA, Q Plan-B, and Rearden Atlas, this flash hider offers quick suppressor attachment and removal in a compact, no-fuss design. Made from high-strength 17-4 PH stainless steel and finished in corrosion-resistant black nitride, it’s built to endure the harshest conditions while maintaining a sleek tactical profile. Whether you're running 300BLK, 7.62, or up to 9mm including 350 Legend, the FHC delivers performance you can trust.

Suppressor Compatibility
Works with .900″-24 adapters including Comstock LPA, Q Plan-B, and Rearden Atlas.

Blast Baffle Protection
Redirects expanding gases outward to reduce suppressor wear.

Effective Flash Suppression
Minimizes muzzle flash for improved low-light visibility and tactical advantage.

No Timing Required
Rotationally symmetric design eliminates the need for shims or clocking.

High-Strength Build
Made from 17-4 PH stainless steel for rugged durability.

Black Nitride Finish
Provides corrosion resistance and a sleek, low-profile look.

Easy Installation
13/16" wrench flats for quick and secure mounting.

Compact Profile
Adds only ~0.9" to muzzle length with a total length of 1.6".

Wide Caliber Support
Compatible with bullets up to 9mm, including 350 Legend.

Specifications

• Material: 17-4 PH stainless steel
• Finish: Black nitride
• Thread Pattern: 5/8-24 for common rifle barrels
• Suppressor Adapter Compatibility: .900″-24 (Comstock LPA, Q Plan-B, Rearden Atlas)
• Wrench Flats: 13/16" for easy installation
• Length: 1.6" overall (~0.9" added to muzzle)
• Weight: 1.5 ounces
• Design: Rotationally symmetric, no timing required
• Caliber Compatibility: Up to 9mm (includes 350 Legend)