Originally Posted by
TonyL
That transfer port sounds mahoosive and will need sleeving down to (circa) 3.2 to 3.4mm?
yup. I saw the huge TP marks on the end of the piston seal too - it's obviously slamming. Looks like 5mm - crazy.
It's long, so defo sleave it down to 3mm ish or it's always going to shoot horribly and with low power. Explains the recoil and harsh cycle too.
Always looking for any cheap, interesting, knackered "project" guns. Thanks, JB.