AB Suppressor F-4 9mm 1/2x28 Direct Thread Silencer Overview Engineered for pistol-caliber carbines and compact suppressed builds, the F-4 delivers class-leading performance in an ultra-light, low-profile package. Built from 100% Grade 5 titanium and circumference-welded for strength, these suppressors disappear at the muzzle while providing excellent suppression for 9mm PCCs. Key Features 100% Grade 5 titanium construction - lightweight and corrosion resistant Circumference-welded body for maximum structural integrity and longevity Near-zero footprint: F-4 < 5" overall length, ~4.5 oz Flush direct-thread mount for an all-muzzle-forward, minimalist profile Fixed direct-thread mount with wrench flats for secure, repeatable installation and easy torquing Designed specifically for PCCs - plug-and-play on most pistol-caliber carbines Simple, robust design minimizes snag and visual bulk on compact platforms Minimum Barrel Length / Use Notes 9mm: No minimum barrel length restriction (suitable for most PCC and pistol-length setups) .300 Blackout: Subsonic only - verify barrel and ammunition configuration before use Care & Maintenance Allow suppressor to cool fully before handling or disassembly. Periodically inspect mount, baffles, and welds for erosion or damage after heavy use. Clean carbon and copper fouling with approved solvents and tools per manufacturer guidance; avoid harsh abrasives on titanium surfaces. Check mount torque and thread engagement before each session to ensure secure fit. Follow all local, state, and federal laws for suppressor ownership, transfer, and use. Specifications / Attributes Material: Grade 5 Titanium Construction: Circumference-welded Mount Type: Fixed direct-thread (flush mount) Weight: a ^ 4.5 oz Length: F-4 < 5.0" overall (approximate) Intended Calibers: 9mm PCC (primary), .300 Blackout (subsonic only) Installation: Direct-thread with wrench flats for positive torqueing Use Case: PCCs, compact duty systems, low-visibility suppressed builds SKU: f4-1/2-28UPC: 679065311194