First Look: JK Armament 155 RPX Suppressor

Adaptable to a wide range of pistol and rifle calibers.

by
posted on March 31, 2025
Jk Armament

JK Armament recently launched an all-purpose .30-caliber suppressor, the new JK Armament 155 RPX .30 cal. It’s an all-purpose unit because, in addition to being suitable for most standard .30 caliber rifle cartridges up to .300 Winchester Magnum, the new JK Armament 155 RPX .30 cal can also work on 9mm/.35-caliber firearms such as .38 Spl, .357 Mag, 9mm, .338 ARC, .338 BLK and .350 Legend, thanks to an internal titanium baffle stack that is bored out to .36 caliber. To turn the JK Armament 155 RPX .30 cal into a true .35-caliber suppressor, all you need to do is to switch the end cap out for one that’s of the appropriate diameter. 

In addition to the JK Armaments ability to switch from .30 caliber to .35 caliber, its baffle stack is end-user adjustable, which means that you can add or remove the individual baffles in order to make the device shorter or longer. In its smallest form factor, the JK Armament 155 RPX .30 cal only weighs 3.6 ounces and is 3.3 inches long.

JK Armament 155 RPX .30 Cal Key Features and Specifications

  • Extremely lightweight design for hunting and precision rifle shooting
  • Durable titanium blast baffle for full-auto rating
  • Wider interior .36-caliber baffles allow big bore and 9mm use by swapping out the end cap swap
  • Uses industry standard HUB 1.375x24 mount size
  • Includes ASR compatible taper mount installed
  • Also includes unlimited, unconditional, lifetime warranty
  • Built with seven different 7075 billet aluminum JK 155 LT modular baffles
  • Grade 5 titanium JK 155 PRO blast baffle
  • JK 155 LT Flash Reducer end cap
  • ASR-compatible JK 155 LT quick attach taper mount installed
  • Length: 3.3 to 8.7 inches, depending on baffles installed
  • External Diameter: 1.55 inches
  • Weight: 3.6 to 11 ounces
  • Finish: Type 3 hard anodize and Cerakote
  • Rated for use with rifle cartridges up to .300 Win. Mag.

MSRP for the JK Armament 155 RPX .30 Cal suppressor is $849. To learn more about this suppressor or other products from JK Armament, visit jkarmament.com.

Latest

SK Customs Lost State of Montezuma 1911
SK Customs Lost State of Montezuma 1911

First Look: SK Customs Lost State of Montezuma 1911

A custom pistol to commemorate a pivotal moment in American history.

First Look: Hawke Optics Frontier Reflex Sight

Available with three different mounting options.

Bond Arms Celebrates 30th Anniversary

Once known just for derringers, the company continues to diversify.

Handguns: Massive Bore

Big-bore carry guns are trending larger now, although Charter Arms’ compact Bulldog remains in production.

First Look: State-Compliant Kimber 2K11 Pistols

For those who live in capacity-restricted states.

NRA Annual Meeting 2025 Exhibition Floor Roundup

What we saw on the show floor in Atlanta.

Interests



Get the best of Shooting Illustrated delivered to your inbox.