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Screw Size

6.9K views 5 replies 4 participants last post by  brad.mugleston  
I have a RMSc mated to my Hellcat OSP. At the time I purchased my Hellcat, there were only two viable options for a ready-to-fit red dot option. At any rate, after a few years of use, I need to change out one of the screws that attaches the RMSc to the Hellcat, and I’m not sure of the way to identify it so I can purchase it locally. I’m sure it is probably a metric thread. Anyone have an idea of ident of the screw and possible places of purchase; I don’t want to source out of England. Thanks much.
FYI you need an M4 x 0.7 probably 8.5mm in length