I just bought a Christensen Ranger 22 & have a Rugged oculus. The carbon fiber barrel has a tensioning nut that uses the 1/2-28 thread & leaves it longer vs the other .22 guns I have.

The CF barrel has 0.625" thread length.
The suppressor has 0.500" thread length. The 1st baffle sits away from the threads, so the can will actually seat on the shoulder & the muzzle will not touch the baffle stack, but I assume there is a gap for a reason.
My other threaded barrels range from 0.400-0.445" in thread length.

I think my options are:
Shims - PITA - need multiple, might mess up alignment & will not match outer diameter of barrel or suppressor, which will look dumb.
Cut down thread protector to ~0.25". It has a full-length thread protector that matches the barrel nicely. Could cut that down to fill the gap. Negatives, $$$ will need a 2nd TP
Cut down barrel & recrown, cut down TP to match. $$$ (maybe $$$$)

Cutting on a rifle I haven't even shot yet doesn't excite me, nor does dealing with multiple thread protectors/spacers. Shims would be OK short term, but I'll get annoyed real quick.

Going to reach out to CA & Rugged to see if they have suggestions I haven't thought of - anybody else solve this problem already?

This is a common issue with .22 barrel threads on rifles, since many of them have a .625 thread length like 5.56 rifles, while most suppressors are designed for the .400 shorter thread length commonly found on .22 pistols. A number of companies make spacers specifically for using short thread .22 suppressors on long thread .22 barrels.

https://silencerco.com/shop/de...rifle-spacer-1-2-28/

duh. Saw Gemtech made one, but it was out of stock. Rugged didn't have one on their website and I didn't think to look at any other MFGs.

Capital Armory $12.95
https://www.capitolarmory.com/...e-thread-spacer.html

quote:

Originally posted by Dwill104:
This is a common issue with .22 barrel threads on rifles, since many of them have a .625 thread length like 5.56 rifles, while most suppressors are designed for the .400 shorter thread length commonly found on .22 pistols. A number of companies make spacers specifically for using short thread .22 suppressors on long thread .22 barrels.

https://silencerco.com/shop/de...rifle-spacer-1-2-28/

It still amazes me that so many companies that should know better just default to the 5.56 specs on rimfire guns.