I have (three actually) of the subjected guns - .177, .22, and .25. In a nutshell I managed to strip / round out the allen / hex key on the grub screw that keeps the barrel in place. Fortunately I was able to get it out and just for the heck of it I took it into a nearby Lowes as I know they have "sizers" in the hardware isle to help you figure out just exactly what thread / pitch / etc .... you need when looking for stuff. According to that sizer this grub screw is the above subjected - M7x1.0. It is apparently a VERY odd size - and is proving to be extremely challenging to find a replacement. I can probably get one from the rti shop in Spain but fer cryin' out loud - that'll wind up costing me $40 or something stupid with shipping. NOT. I did check that rti arms shop in Spain and all they have for an exploded parts diagram is for the newer P2. ( from memory . . . part #44 on that diagram - I think ) is the grub screw. According to them though / that drawing / part # - it's an M8. ( which is MUCH MUCH more common and very easy to find via google searches )
Those of you who happen to own a first gen prophet . . . . and maybe your not shooting it a lot? It's just sitting there collecting dust AND there happens to be a Lowes near where you live . . . . ( see where I'm going with this? lol ) Any chance you could take your grub screw with a 3mm allen into said Lowes and run it on their sizer to confirm that it's this, apparently, odd M7 thread??
I know for a fact that RTI has changed the designs of the guns over the years - in sometimes unexpected ways. Wondering if they too had issues with, what I'm thinking, is this odd ball M7 sized thread and they 'standardized' on the seemingly much more common M8.
If you know where I can score an M7x1.0 threaded set screw / grub screw - I'm all ears!
Those of you who happen to own a first gen prophet . . . . and maybe your not shooting it a lot? It's just sitting there collecting dust AND there happens to be a Lowes near where you live . . . . ( see where I'm going with this? lol ) Any chance you could take your grub screw with a 3mm allen into said Lowes and run it on their sizer to confirm that it's this, apparently, odd M7 thread??
I know for a fact that RTI has changed the designs of the guns over the years - in sometimes unexpected ways. Wondering if they too had issues with, what I'm thinking, is this odd ball M7 sized thread and they 'standardized' on the seemingly much more common M8.
If you know where I can score an M7x1.0 threaded set screw / grub screw - I'm all ears!
Last edited: