Thread pitch for the Brocock Concept S6 standard

well after doing some looking it appears to be 10mm-1.0, the elite has the more standard 1/2-20 unf thread

that 10mm thread size is the same used on the Diana Chaser

and after doing some looking for converting the Chase to 1/2-20 I was disappointed with what I found

there is a place the UK that has the adapter but will not ship to the states

if you have a Lathe you could make your own out of 1/2 stock but otherwise it's not easy

wolf silencer has one for a Sumatra 2500

https://www.airgunnation.com/topic/any-one-shooting-the-brocock-concept-s6-standard/

about all I have
 
my .22 concept and contour both have a 10mm x 1 thread. DonnyFL will make an adapter for you if you need or, Neil Clague made a real nice moderator for mine.



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Yep, my Concept Elite with a thumbhole stock and shrouded barrel (shroud does nothing to quiet down the gun) has the standard 1/2-20 thread.

I also looked at the non-Elite Concept at AOA when I bought this one, and they had an adapter that converted the oddball thread on the bare barrel version to 1/2-20. This was a couple of years ago so dunno if they still carry the adapter.