The JK Armament 105 RFX 22K is a K-size rimfire suppressor in black, built for rimfire rifles from .22 LR up to 5.7x28mm (JK Armament part no. JK-105RFX22-K). It is one of the smallest and lightest silencers on the market at 1.7 inches and 1.1 ounces in its shortest build. Fully built with all seven baffles, it is still just 5.1 inches long and 3.6 ounces. JK Armament calls it its most budget-friendly suppressor, and the 1/2×28 thread mount is included.

Key Specifications

• The rated rounds are .22 LR, .17 Mach 2, .17 HMR, .17 WSM, .22 Mag, .22 Hornet and 5.7x28mm.
• The length is 1.7 to 5.1 inches depending on configuration.
• Length without the mount is 1.6 to 5 inches, useful for judging clearance.
• The weight is 1.1 to 3.6 ounces depending on configuration.
• The diameter is 1.05 inches, a slim tube for rimfire barrels.
• The body is 7075 billet aluminum with a Type 3 hard anodize coating.
• The package includes seven rimfire baffles, a 1/2×28 thread mount and a flash reducing end cap.

Frequently Asked Questions

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.

What does K-size mean here? JK Armament says the fully built 105 RFX 22K is still K size at 5.1 inches long and 3.6 ounces.

How many baffles are there? Seven rimfire baffles come in the package, and you can remove them to shorten the suppressor.

Buy the JK Armament 105 RFX 22K K-Size Rimfire 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 silencers and suppressed firearms lineup and our Lubbock, Texas team will handle the transfer.