Just had an email back from Vortek saying they are working on a 'O' ring piston head fitting for the Weihrauch range, presumably like the AA ones they sell but without the big 'ole in the middle, that a muggle like me can just heat with a hairdrier and pop onto the piston like the OEM job.

They also said they could not guarentee they would perform better than the parachute types they make already. So there's honesty for you.

Thought I would let you know, thats all.....