The JK Armament RPX 9mm suppressor in black is the standard RPX model for 9mm hosts (brand part no. JK155RPX9). JK Armament builds the RPX as a family of suppressors, and this model is distinct from the 9K variant that shares part of its name. It is finished in black to match the bulk of handguns and carbines on the market. A 9mm can is the practical place to start with suppressed shooting, since ammunition is plentiful and subsonic loads are easy to find. It is a sound choice for the shooter who wants a dedicated 9mm suppressor from a maker known for modular designs.

Key Specifications

• The caliber rating is 9mm, a cartridge with wide subsonic ammunition choices for quiet shooting.
• The finish is black, which pairs with most pistol slides and carbine receivers.

Frequently Asked Questions

Is this the RPX 9K? No. This is the standard RPX 9mm; the RPX 9K is a separate model in JK Armament’s line.

Do I need ATF approval to buy this? No. As of October 9, 2026, ATF no longer requires Form 4 approval, registration or a tax stamp for suppressors. It transfers on a Form 4473 with a background check through a Class 3 (SOT) dealer. State and local laws still apply.

Buy the JK Armament RPX 9mm Suppressor, Black

As of October 9, 2026, this suppressor transfers on a Form 4473 with a background check at your Class 3 (SOT) dealer, with no Form 4 or tax stamp; state and local laws still apply. Order through JK Armament‘s suppressed firearms and silencers lineup and our Lubbock, Texas team will handle the transfer.