Twistlock barrel loose

[Newt]

What's the traditional way to deal with a twist lock barrel with wobble? I could probably machine a brass sleeve to fit it, but that seems like overkill.

The barrel is a J&J with several degrees wobble when it's locked into the body.

[TwilightG]

replace the barrel o-rings?

[correia3]

replace the barrel o-rings?

Or add more sometimes...

[Newt]

Are those standard orings? It seems like it has way more wobble than new orings could fix.

[Jacobd]

If you take your gripframe off and look at the underside of the twist-lock pin there should be a small allen head scew, it holds the spring against the the pin which holds the barrel to the body, try tighting that.

EDIT. I reread the thread and I don't really think tighting the twistlock pin will help with side to side wobble, if new orings don't work then in video 2 of the automag series on youtube TK recomends some thin scotch tape under the orings for a thighter barrel fit.

[Newt]

Yeah... I'm pretty sure none of those things will work. Just measured the barrel dia at the breech, and it's about 0.010" undersize. I could still sleeve it, but then it'll probably make the plastic nubbins less effective.

[Pneumagger]

Quality electircal tape has a thickness of about .004-.007
Thry wraping a single layer of this around the twistlock under the body where no one can see.

Or you could check mcmaster.com for nonstandard orings. The groove is wide enough to accept a larger that the typical 1/16" oring. Maybe look for something with the approriate ID but with a 3/32" thickness. Stick with soft-medium durometer... polyurethane. Buna-N will work too but wear out faster. Good extra-credit reading material: Parker Hanifin Oring Design Manual (free online).

[Konigballer]

Or you could check mcmaster.com for nonstandard orings. The groove is wide enough to accept a larger that the typical 1/16" oring. Maybe look for something with the approriate ID but with a 3/32" thickness. Stick with soft-medium durometer... polyurethane. Buna-N will work too but wear out faster. Good extra-credit reading material: Parker Hanifin Oring Design Manual (free online).

Good idea! Actually I think fat buna o-rings would work great, and wouldn't wear out that fast. Not like your constantly removing your barrel all the time.

[athomas]

Tape is fine. There are a few barrels that are undersized. The tape trick works every time.