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Old 10th March 2012, 09:38 PM
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SimpleSimon SimpleSimon is offline
Team Impact
Join Date: Jul 2009
Member of: MAD & Cambridge
Location: Black Notley, Essex
Posts: 106

Hi Kieran.

I had a very similar problem when I put a Mk.2 (short stroke) piston into a friend's TXHC...

I found taking the beartrap off the side of the action helped a bit, but it was still hit and miss with getting the gun to cock and the safety to engage.

I ended up refitting the original piston seal and this solved the problem. Maybe the V-Mach seal doesn't sit as proud of the piston end - effectively shortening the distance that the piston rod is pushed into the trigger mechanism?

Another thing to try would be to replace the cocking shoe... Jim Maccari makes a stronger, tighter fitting version, which may just help the cocking lever shove that piston back just a little further.

Hope this helps.
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