Tuning Tight fitting carbon fiber sleeves

[Airgunmann]

I install a 500 mm 22 sleeve and a 30 cal tonight they both wouldn't go in very far in the outer tube I found they both fit the barrel very well so I lubed the up and forced them into the outer tube with the barrel out and just used my body weight to force them in till the were flush and found a socket that fit well and tapped them in until they bottomed out barrels both slid right in and was able to tighten up the retaining screw just till it was snug I read other people were sanding them to fit I just chamfered the one end a little bit around the outside didn't want to take all the time sanding them and breathing the stuff it worked out pretty well actually and I have a spacer made up which will work with all three calibers 22 25 and 30 all 500 mm I was also able to buy just a shroud for my 30 cal mk2 from fx like my other 2 shrouds this wasnt a universal shroud either just came in 3 pieces rear oring piece that slides over the barrel from air stripper/ adapter to 1/2 20 and shroud tube it's matches my 22 and 25 so my peek spacer will work to tension each one of them too 

 

[biohazardman]

Good that you were able to fit it like that.

I had to sand one mine and then tap it in it was a tight fit for sure. I had to glue another although tape may have werqed as it had a very sloppy fit. None of the barrel housings are quite the same so it's hard to say what you may have to do to get the fit just right.

So long as it ends up a snug fit it's all good.

 

[Airgunmann]

It was definitely a snug fit I was worried about breaking something or the carbon being squeezed to tight for the barrel to fit in but it worked

 

[Corvid_hunter]

Did you happen to clean the inside of the carbon fiber tube before you put it on the liner?

 

[lennyk]

what’s the best way to sanded the inside of the cf tube?

 

[Airgunmann]

Yeah blew them out with air why ? Barrels or liners both slid in with out a problem it was the outside tube and outside of the carbon sleeve that where super tight and yes they were clean and free of orings too

 

[lennyk]

ok, i have a tube which won’t go over a barrel

inside is clearly not smooth

 

[mtnGhost]

It's a super nasty task honing them out. If you don't have a lathe, then can use water and some wet-dry sand paper (~320 grit) around a rod to remove material. It can take some time tough.

If you have a lathe, you can get a little more creative. I had some thick tubing that was a tad too snug, and I wound up threading an end mill (the size of what the ID was supposed to be) to a rod that I threaded and bored it out carefully. It worked really well, but it was still a nasty task! (You absolutely need breathing filtration and eye protection). Posted some photos on Instagram afterwards https://www.instagram.com/p/COW-ZEbB4zd/

 

[Airgunmann]

Take a gun cleaning rod and a drill and wrap with sand paper until u get it to the correct size putting the drill turning in direction it is wrapped and slowly work it up and down the inner part of the tube take your time so not to over do it