[moop]

just got a ICS 60 CXP today from mach 1.
after changed spring to m90 (easier then i thought) i put some rounds threw it with the stock high caps it came with .
everything was ok no issues nothing.
issues happend when i tryed my pmag with it. it shot every other time. shoot , dry fire, shoot, dry fire....
go back to the 2 stock high caps and no issues.

i wanted to buy more mid cap pmags but it doesnt seem to like them.
has anyone had this problem with compatibility with ICS and pmags? or is it something else?