Reply To: Quick Change Advice QB78 Bolt O-Ring?

Forums Springers, Pumpers, C02, & Vintage Quick Change Advice QB78 Bolt O-Ring? Reply To: Quick Change Advice QB78 Bolt O-Ring?

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PumaCarl
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I went through the same problem when I first got my Gauntlet, and I believe (99% sure) that they are similar. 

 

 

The FKM listed, is viton.  So you want a viton(FKM) with a 75 hardness rating, i.d. 1.42, o.d. 3.68, w.d. 1.52  Silicone them up and use an arrow nock to slide them on.

I really wish someone had come forward and told me that originally, that is why I keep editing this post to get it right. I have been in your shoes, and it is a real pain. Good luck!