I picked up 2 more rifles from a pair od Gunbroker.com auctions.
HM1000X .357 and a BM500X .30
The HMX is, according to Martin Rutterford, one of 2 or 3 prototypes he made back in 2014.
But both needed some work. The HMX literally had several rotten orings that I had to chase down all the bits.
Ordered spares from Martin, came in two days, and got both guns sealed and holding air.
But neither had a moderator so no testing allowed until moderated.
The end of the BM500X has a 5/8-18 post and no one makes an adapter for that.
The HMX has a M30x1 end cap. One of the AEA rifles has that but only up to .30.
So deep diving I eventually came across:
brainright.com
Input parameters
Boom, 3d model .STL file
A bunch of printed adapters later I have adapters for both guns.
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