JK ARMAMENT | JK155RPX9K RPX 155 | 9mm 1.55″ | 1/2-28

The JK Armament JK155RPX9K RPX 155 is a compact, modular suppressor designed for 9mm pistols and pistol-caliber carbines. Its shorter RPX form factor reduces overall profile while retaining JK Armament’s signature suppression design. The unit ships with a 1/2-28 piston/booster and a high-flow, flash-hiding end cap installed, optimized for reliable function on boosted 9mm platforms. The modular baffle stack lets operators adjust length and weight to suit different firearms and carry preferences.

Product Specifications

• The manufacturer is JK ARMAMENT.
• The manufacturer part number is JK155RPX9K.
• The model name is RPX 155.
• The caliber is 9mm.
• The diameter is 1.55 inches.
• The thread pattern is 1/2-28.
• The construction is black aluminum and titanium.
• The product ships with a 1/2-28 piston/booster and a high-flow flash-hiding end cap installed.
• The form factor is a shorter RPX profile for reduced overall length.
• The internal design uses a modular baffle stack to allow adjustments to length and weight.
• The design is optimized for boosted 9mm platforms.
• Intended applications include pistol caliber carbines and 9mm handguns.
• The UPC is 850064482478.

Built for users who need a reduced-profile suppressor for lightweight rigs and compact PCCs, the RPX 155 offers modularity and installed components that support reliable operation on boosted 9mm systems. Its combination of aluminum and titanium construction with a configurable baffle stack makes it a practical choice for shooters seeking a balance of size, weight, and adaptable performance.