JK 155 RPX 45
Select your dealer to see all offers
Find a dealer


We handle all ATF paperwork for Powered Dealers
![]()
#1 in the
NFA Industry
![]()
100% Satisfaction
Guaranteed
![]()
Free Ground
Shipping
One can to suppress your whole collection, from pistols to rifles, the RPX .45CAL has you covered with its large bore, HUB mount size, Mission Configurable design, and JK Armament’s Unlimited, Unconditional, Lifetime Warranty.
With its .45 caliber bore and our most advanced Rifle Pistol System (RPX) baffle design that merges rifle and pistol suppression performance into a single suppressor, the RPX .45CAL is ready for duty on pistols, carbines, rifles, machine guns, and more. From 9mm and 45 ACP to 300 Blackout, 338 ARC, 308 WIN, 458 SOCOM, and so many more all the way up to 300 Win Mag, the RPX .45CAL has your whole collection covered (minimum barrel lengths apply to some calibers).
FEATURES AND BENEFITS OF THE RPX .45CAL:
- Suppress Everything: From .223 to .45-70 Gov’t, .22 LR to .45 ACP—subsonic or supersonic.
- Featherweight Firepower: Built light for the backcountry, steady for precision—carry it all day, shoot it all week.
- Titanium Where It Counts: Full-auto rated with a titanium blast baffle tough enough for .300 Win Mag abuse.
- Mount Up Your Way: Ships with an ASR-compatible Taper Mount and uses the universal 1.375x24 HUB thread. Run it how you like.
- No B.S. Lifetime Warranty: Unlimited. Unconditional. And fully backed by JK Armament—because confidence should come standard.
TECHNICAL SPECIFICATIONS:
- Length - 3.3" - 8.7" (Configurable), 2.8" - 8.2" (Configurable w/o mount)
- Diameter - 1.55"
- Weight- 3.6 - 11oz (Configurable)
- Build Material: Grade 5 Titanium blast baffle and 7075 Billet Aluminum modular baffles
- Finish - Black, Type 3 Hard Anodize & Cerakote
- Full-Auto Rated: Yes
- Barrel Restrictions:
- Full-auto on handgun calibers up to 45 ACP plus on subsonic 300 BLK and 338 ARC with no minimum barrel length
- Sporting use on 7.62x39, 223/5.56, 6.5 CM, 308 WIN, 458 SOCOM, 45-70 Gov’t, 7MM RemMag, 300 WinMag, etc. with minimum barrels from 8.5” to 20” depending on caliber
WHAT'S IN THE BOX:
- 1 x JK 155 LT Quick Attach Taper Mount
- 1 x JK 155 LT 2.5" Tube
- 1 x JK 155 Pro Rifle Baffle
- 7 x JK 155 LT Pistol Baffle
- 1 x JK 155 LT Flash Reducer End Cap
Curious about the tax stamp change? Learn more here.
New to suppressors? See how to buy a silencer in minutes.
| Dimensions | 1x1x1 |
|---|---|
| Coating Type | Black Anodized |


