Comstock Armory 4-Prong Plan-B Flash Hider, 5/8x24, .30 Cal, Black Nitride The Comstock Armory 4-Prong Flash Hider combines effective flash suppression with a compact Plan-B-pattern suppressor mounting interface for compatible 300 BLK and 7.62 platforms. Featuring standard 5/8-24 threads, high-strength 17-4 PH stainless steel construction and a durable black nitride finish, this muzzle device provides a rugged foundation for compatible suppressor systems while maintaining a streamlined profile. The four-prong design is engineered to effectively reduce visible muzzle flash, while mass-shifted tines help prevent the ringing sound associated with many traditional pronged flash hiders. Its rotationally symmetric construction eliminates the need for timing shims, simplifying installation and maintaining a consistent mounting interface. Compatibility with common .900-24 adapters-including the Comstock LPA, Q Plan-B and Rearden Atlas-allows the flash hider to integrate into a range of Plan-B-pattern suppressor setups. Ready to complete your suppressor-mounting setup? Review fitment, confirm compatibility and add the Comstock Armory 4-Prong Flash Hider to your cart at BattleHawk Armory. Flash Suppression and Suppressor Compatibility The four-prong configuration is designed to effectively reduce muzzle flash while the mass-shifted tines help minimize the ringing commonly associated with other pronged flash hiders. At 2 inches overall, the device adds approximately 1.36 inches to the muzzle, keeping the mounting system compact while providing a durable suppressor interface. The 5/8-24 thread pattern is intended for compatible 300 BLK and 7.62 applications. The flash hider interfaces with common .900-24 Plan-B-pattern adapters, including the Comstock LPA, Q Plan-B and Rearden Atlas. Key Features and Specifications Model: 4-Prong Flash Hider Primary Thread/Interface: 5/8-24 Caliber/Bore Guidance: 300 BLK and 7.62 applications Material: 17-4 PH stainless steel Finish: Black nitride Weight: 1.9 oz Overall Length: 2 in Added Muzzle Length: Approx. 1.36 in Installation Interface: 13/16 in wrench flats Mounting Compatibility: Common .900-24 Plan-B-pattern adapters, including Comstock LPA, Q Plan-B and Rearden Atlas Tine Design: Mass shifted to reduce ringing Timing: Rotationally symmetric; does not require shims Fitment and Installation Guidance The Comstock Armory 4-Prong Flash Hider uses standard 5/8-24 threads for compatible 300 BLK and 7.62 barrels. Verify barrel threading, bore compatibility, shoulder dimensions and complete suppressor-system fitment before installation. For pin-and-weld applications on 14.5-inch barrels, the 5/8 spacer ring is required. Confirm the resulting barrel length and configuration before permanently attaching the muzzle device. Before attaching a suppressor, always verify bullet stabilization and confirm that the muzzle device, adapter and suppressor are properly aligned. Use an appropriate alignment rod to verify concentricity and follow the current installation instructions supplied by Comstock Armory. Some suppressor manufacturers may limit or exclude warranty coverage when aftermarket mounts or muzzle devices are used. Review the suppressor manufacturer's compatibility and warranty requirements before installation. Build a Compatible Comstock Mounting System The 4-Prong Flash Hider is designed around the Plan-B-pattern suppressor mounting ecosystem and is compatible with common .900-24 adapters, including the Comstock LPA, Q Plan-B and Rearden Atlas. Always verify the barrel thread, muzzle-device bore, adapter specifications and suppressor compatibility as a complete system before installation. Get yours today at BattleHawk Armory. Choose the correct configuration, verify complete system compatibility and purchase the Comstock Armory 4-Prong Flash Hider from a trusted online retailer. Frequently Asked Questions What caliber is this 4-Prong Flash Hider designed for? This model uses 5/8-24 threads and is intended for compatible 300 BLK and 7.62 applications. Does the flash hider require timing? No. Its rotationally symmetric design eliminates the need for timing shims. Can this flash hider be pin-and-welded on a 14.5-inch barrel? Yes. The 5/8 spacer ring is required for pin-and-weld applications on 14.5-inch barrels. Always confirm the resulting barrel length and configuration before permanently attaching the device. What suppressor adapters are compatible? The flash hider is compatible with common .900-24 Plan-B-pattern adapters, including the Comstock LPA, Q Plan-B and Rearden Atlas. How do I confirm suppressor fitment before use? Verify the barrel thread specification, bore compatibility, adapter interface and suppressor compatibility. Before attaching a suppressor, verify bullet stabilization and use an appropriate alignment rod to confirm the complete system is properly aligned. Use only with a compatible firearm, ammunition and suppressor system. Installation should be performed by a qualified person when the user is not fully familiar with muzzle-device or suppressor-mount installation. Product Identification Manufacturer SKU: 4P-58-30UPC: 850069580018 Get the Comstock Armory 4-Prong Flash Hider at BattleHawk Armory!