Angstadt Arms 3-Lug Muzzle Adaptor 9mm Luger 1/2x28

The Angstadt Arms 3-Lug Muzzle Adaptor 9mm Luger 1/2x28 is a quick-attach suppressor interface designed for 9mm pistol-caliber firearms requiring rapid sound suppressor mounting and removal. This tri-lug adapter provides a universal 3-lug connection standard that pairs with any suppressor featuring the same interface, as well as the Angstadt Arms 3-Lug Quick-Detach Blast Shield accessory. The hardened steel construction with black nitride finish delivers corrosion resistance and extended service life in demanding environments.

Precision engineering eliminates the need for shim adjustment during installation, though shims may be used if specific timing alignment is required for your particular suppressor. The design accepts standard 1/2x28 muzzle threading common to most 9mm pistols and submachine guns. Users should note that crush washers are not compatible with this adapter—installation uses direct shoulder-to-muzzle seating. The compact 0.07 lb profile adds negligible weight to the muzzle assembly, preserving balance on short-barreled platforms where muzzle-heavy configurations degrade handling.

This adapter is purpose-built for operators running suppressed 9mm configurations in patrol, training, or tactical roles where quick suppressor changes between duty and suppressed fire improve operational flexibility. The 3-lug standard has become the de facto interface for modern pistol-caliber suppressors, making this adapter a practical bridge between legacy 1/2x28 threaded barrels and modern quick-detach suppressor systems. Law enforcement agencies and civilian shooters alike rely on standardized interfaces to reduce inventory complexity across multiple platforms.