size question

[ccyg8774]

Originally Posted by yan101

Is there a mp5, ak spetzna or something of the same size with ''quick spring change@ (too reduce fps ''on the go'') ?
I know a couple of g36 modele have them (it was highly suggested by the organiser of the event I am suppose to go too).

The problem of quick spring changing designs is that many parts are not interchangeable with other guns, and may be hard to find.