TP Vapor RS470 Barrel Bolt Size

Full_Fan · 2025-09-18T09:54:14-0400

I know Randy is traveling this week, so I thought someone else on here might know this... can anybody tell me what size bolt and thread would fit these 2 mounting holes on the bottom of the barrel on my Vapor RS470... see photo. Thanks!

ayak60 · 2025-09-18T16:01:38-0400

Pulled one of mine out and thought it might be M5-0.9 but no cigar (using my metric set).
I didn’t have an SAE tap/die set to confirm, but maybe it is a 10-24 or 10-32

Full_Fan · 2025-09-18T16:58:49-0400

ayak60 said:
Pulled one of mine out and thought it might be M5-0.9 but no cigar (using my metric set).
I didn’t have an SAE tap/die set to confirm, but maybe it is a 10-24 or 10-32

Thanks! That'll give me a starting point anyway. Much appreciated!!

10PtCrossbow · 2025-09-18T19:58:06-0400

Most likely 10/24

Full_Fan · 2025-09-19T12:02:16-0400

Thanks Randy!

Full_Fan · 2025-09-22T17:21:21-0400

Just posting an update in case anybody else ever wants to know... the correct size is #8-32.

TP Vapor RS470 Barrel Bolt Size

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