What size O-Ring do you use?

[briang2ad]

For keeping your thread protector on your threaded barrel.. thanks.

[s0nspark]

Here is the one I use:

https://www.mcmaster.com/#9464k16/=1dnqgqy

[briang2ad]

Thank you sir!

[s0nspark]

Thank you sir!

Anytime

[CZ173]

#013 which is 9/16x7/16?1/16

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[Christopher67]

Here is the one I use:

https://www.mcmaster.com/#9464k16/=1dnqgqy

Thanks, much appreciated!

[CZ173]

Found a better size, 14mmx10mmx2mm

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[briang2ad]

Here is the one I use:

https://www.mcmaster.com/#9464k16/=1dnqgqy

These are tight, but they work!

[s0nspark]

Here is the one I use:

https://www.mcmaster.com/#9464k16/=1dnqgqy

These are tight, but they work!

I didn't want something that would come off easy ;-)