Comstock Armory 1/2×28 Flash Hider

Description Comstock Armory 1/2×28 Flash Hider The Comstock 1/2×28 flash hider solves a problem most muzzle devices quietly ignore — what your host firearm does to the suppressor attached to it. Comstock machines the FHC-12-9 from 17-4 PH stainless steel and finishes it in black nitride. At 1.6″ overall and 1.7 ounces, it adds only 0.97″ to your muzzle. The 1/2-28 thread pitch covers all standard 9mm and 5.56 hosts, and Comstock rates the device for bullets up to 9mm — so it runs equally well on a PCC or an AR pushing 5.56. The detail that separates the FHC-12-9 from a generic flash hider is its gas port geometry. Instead of directing expanding gases rearward into the suppressor’s first baffle, it redirects them outward. That single design choice actively reduces blast baffle wear, which means your suppressor lasts longer on this host. Key Features — Comstock 1/2×28 Flash Hider Rated for bullets up to 9mm — covers 5.56/.223, 9mm, and 350 Legend Compatible with .900″-24 mount systems: Q Plan-B, Rearden Atlas, and Comstock LPA Gas port geometry redirects expanding gases outward, reducing suppressor blast baffle wear 17-4 PH stainless steel construction, black nitride finish 1/2-28 threads — fits all common 9mm and 5.56 host barrels Rotationally symmetric — no shimming or timing required 3/4″ wrench flats for torque-to-spec installation 1.6″ overall length; adds 0.97″ to the muzzle 1.7 ounces   Why This Product Stands Out Most suppressor-ready muzzle devices stop at “accepts a mount.” Comstock went further and designed the FHC-12-9 specifically around what happens to the suppressor during firing. Because the gas port geometry redirects blast outward rather than forward into the can, baffle erosion slows down. For anyone running a suppressor on a high-volume host — a 9mm PCC at a competition, a carbine at a training class — that translates to real service life over time. Additionally, the rotationally symmetric design removes the timing step from installation entirely. Anyone who has shimmed a muzzle device knows how much friction that adds to a build. The FHC-12-9 threads on, torques down with the 3/4″ wrench flats, and is ready to run — no shims, no orientation dependency. Furthermore, Plan-B and Rearden Atlas compatibility puts this device inside the most widely adopted suppressor mounting ecosystem currently on the market. If a customer is already running or planning to run a Q or Rearden suppressor, this is a natural host-side pairing — and because TX Arms stocks both, the full setup is available in one transaction. Ideal Use Cases 9mm PCC and AR-15 hosts intended for suppressor use Builds running Q Plan-B or Rearden Atlas suppressor systems Shooters looking to reduce suppressor wear on high-volume hosts Low-light or home defense builds where flash reduction is a priority Pre-purchase muzzle prep before a Form 4 suppressor approval Technical Specifications Specification Details Manufacturer Comstock Armory Model FHC-12-9 SKU FHC-12-9 UPC 850069580063 Type Compact Flash Hider / Suppressor Mount Thread Pitch 1/2-28 Caliber Compatibility Up to 9mm (5.56/.223, 9mm, 350 Legend) Material 17-4 PH Stainless Steel Finish Black Nitride Overall Length 1.6″ Muzzle Extension 0.97″ Weight 1.7 oz Wrench Flats 3/4″ Mount Compatibility .900″-24 (Q Plan-B, Rearden Atlas, Comstock LPA) Timing Required No — rotationally symmetric Compatibility Information Suppressor / Mount Compatibility The FHC-12-9 accepts any suppressor or adapter using the .900″-24 mount standard — specifically the Rearden Atlas, and Comstock LPA, and Q Plan-B systems. Because these three adapters cover the majority of suppressor mounting setups in use today, compatibility is broad. Note that some suppressor manufacturers do not warranty their products when used with aftermarket mounts or muzzle devices — verify with your suppressor manufacturer before use. Always confirm bullet stabilization and use an alignment rod before running a suppressor on this device. Host Firearm Compatibility The 1/2-28 thread pitch is standard across 9mm and 5.56 barrels on AR-platform PCCs, AR-15s, and threaded-barrel handguns. Comstock rates the FHC-12-9 for calibers up to 9mm, which includes 5.56/.223 and 350 Legend. Consult the Comstock Armory fitment guide to confirm compatibility with your specific host before purchasing. Manufacturer: Comstock Armory | Model: FHC-12-9 | Type: Compact Flash Hider / Suppressor Mount | UPC: 850069580063 | SKU: FHC-12-9