Another Barrel thread thread

[jpdgas]

This came with my autococker pump. I would like to use the front as it matches my anno, but the back is too large for pump as I get rollouts. It's definitely not freak compatible, what back can I use this front on?

AC barrel.jpg

[Cdn_Cuda]

See if you can get some Freedummy detents - little fingers that fit between your barrel back and body and squeeze your balls every so gently to prevent rollouts.

[minimag03]

Can ya post a better pic of the threads? next to a measuring tape if possible. That will help us to help you.

You can also use some plastic fingers that members here make. They're prevent roll outs in larger bore barrels. Better than nothing!

You could possibly get the tip rethreaded for a Freak, CP, Dye, or whatever will work.

[Fubarius]

If I'm not mistaken, that's a System X barrel. Not sure what's compatible with that, and other backs for it are getting hard to find.

[fullofpaint]

Autococker parts has a version of this barrel with the small Palmer's/Carter-style inserts. Can probably email them and see if you can just buy a back and inserts

[Ecapnation]

Get it bored for freak inserts

[jpdgas]

I'll get a pic with a ruler when I have a chance. It sounds like the detents may be the simple option.
It looks exactly like a gat stick on autococker parts, so I sent them a message.
Getting it bored might be an option too as I have the freak inserts already. Any recommendations on who would be able to do that?
Thanks for your help y'all!

[minimag03]

BMC Fabrication is the best at boring according to most people.

https://www.bmcfabricationservice.com/services

[Impactfour]

BMC has done a few for me, including a 6" phantom barrel that other airsmiths wouldn't look take a whack at. He's quick, communicative and has good prices. I'd definitely recommend him, just make sure you clean your barrel first!

[flyweightnate]

Eyeballing it, see if you can borrow a CP back. They've made a lot of barrels for a lot of people and it looks similar.

[flyweightnate]

My CP front measure .860" across the threads, which are 1.5mm pitch... M22x1.5? O-ring groove is 5/8" from the back edge.

[minimag03]

I've also noticed it was similar to CP, pretty sure they produced barrels for WGP and JT int he early 2000s and maybe again for the Trilogy release. However, they was unusually slight changes. And the above barrel *appears* to have a small lip after the threads which I believe CP lacks. Still might work tho!

[woouulf]

I should have the matching back.. The one you have looks to be raw.. Since I have all the System X barrels from when they closed, I have yet to find anything compatible..

[woouulf]

If I'm not mistaken, that's a System X barrel. Not sure what's compatible with that, and other backs for it are getting hard to find.

I have backs ,clear anno in 84, 87....

[jpdgas]

I'm going to send this off to BMC to get bored, thank you all for your help!