piston head - mechbox ver 2 or 3
ok, the piston head I want must work with an ICS mp5 sd5 which has a ver 2 mechbox. The problem is the head I want is only avliable for version 3 mechbox and sold out for ver2.
my question is this, can a ver3 piston head not work in all cyclinders wether it's ver 2 or 3? It's my understand that most parts inside the mechbox short of the spring guide with it's tabs are the same. are the cyclinders for different mechbox versions that much different from one another?
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