Comstock Armory Full Size Plan-B Flash Hider, 1/2x28, 9mm, Black Nitride The Comstock Armory FHL-12-9-PW is a full size flash hider combining 1/2x28 barrel threads with a Plan-B suppressor-mount interface. Its 9mm configuration, 17-4 PH stainless steel construction and black nitride finish identify this exact version. The 2.14-inch body weighs 2.3 ounces and adds approximately 1.5 inches beyond the muzzle. These separate dimensions help distinguish the device's physical size from its contribution to the overall setup. Shop the Comstock Armory FHL-12-9-PW at BattleHawk Armory for your compatible 1/2x28 setup. Flash Reduction and Blast-Baffle Protection The flash-hider geometry reduces visible muzzle flash, while its outward gas direction helps limit wear at the suppressor blast baffle. This gives the device a defined role both as a flash hider and as the mounting point for a compatible suppressor. The rotationally symmetric body does not require timing shims. Its black nitride treatment gives the stainless steel a durable, dark finish, while the wrench flats provide a dedicated tool interface. Compatibility and Configuration The suppressor-side interface fits compatible 0.900-24 Plan-B adapters, including Comstock LPA, Q Plan-B and Rearden Atlas. Barrel threading, bore clearance and the suppressor's internal space must all suit the intended configuration. The muzzle device does not establish the caliber rating of the suppressor. This version includes a predrilled pin-and-weld hole. That feature identifies the supplied part; a finished barrel assembly requires its own dimensional and fitment verification by a qualified professional. Product Specifications Manufacturer: Comstock Armory Model / Manufacturer SKU: FHL-12-9-PW UPC: 850069580155 Product type: Full Size Flash Hider Material: 17-4 PH stainless steel Finish: Black nitride Weight: 2.3 oz Barrel threads: 1/2x28 Mounting system: Plan-B pattern; complete-system fitment required Bore compatibility: Up to 9mm Overall length: 2.14 inches Added length: approx. 1.5 inches Frequently Asked Questions Is a suppressor included? No. This product is the muzzle device. A compatible suppressor and suppressor-side adapter are separate components. Does the thread pitch determine caliber compatibility? No. Barrel threads and bore clearance are separate specifications. Both must match the firearm, and the complete suppressor system must be appropriate for the cartridge. Choose the Comstock Armory FHL-12-9-PW at BattleHawk Armory for a correctly matched full size flash hider and Plan-B mounting interface.