Finally I have it where I want it.
SRS A1 covert,
Random foam filled suppressor,
Rapax 2J with 1x spacer - 334+-2 fps on Geoffs .43s,
Faceless barrel 420mm, 60deg r hop patch and 100% airseal bucking with a FAST hop (perfect air seal)
Wasp piston with medium weight and full break and their spring guide,
Stock filled with expanding foam,
Random Tesco scope on high mounts.
All in all very happy now and shooting great already out to 64m (furthest I can get at present) and I’m certain when the hop beds in it will be a real tack driver. Also, as a bonus, it sounds like a good mk23 and has a dull thud when firing so should be almost unheard outside the med.
All that’s left is to put some cut up leaf trouser leg strips on it so it really blends in with the vegetation.