KGM Suppressors SMG9 Direct Thread Adapter 5/8x24 Steel Black Nitride

The KGM Suppressors SMG9 Direct Thread Adapter lets you mount a HUB-compatible 9mm suppressor directly to a barrel threaded 5/8"x24. Machined from steel and finished in a durable black nitride coating, this adapter provides a secure, repeatable interface between your barrel and suppressor without the need for additional mounting hardware.

The adapter features 5/8"x24 male threads on the muzzle side to thread onto your barrel, with a HUB 1.375"x24 female thread pattern on the suppressor side for broad compatibility across modern suppressor designs. It is purpose-built for 9mm use and is confirmed to fit the KGM R6, R65, R65K, R30, and R30K, as well as any other HUB-compatible suppressor on the market.

The nitride finish delivers strong corrosion and wear resistance while keeping a low-reflectivity matte black appearance that blends with most firearms and suppressor finishes. Whether you are running a pistol-caliber carbine, a PCC, or any other 9mm host with a 5/8"x24 threaded muzzle, this direct-thread adapter offers a simple, no-tools-required mounting solution.