原帖由 edison0918 於 19-8-2010 13:18 發表
Just wondering, has any CHing upgraded their KSC MP7 with RA-TECH's "Hard Kick" Kit?
http://www.tokyo-model.com.hk/ecshop/goods.php?id=6307
What I'm interested to know is how much improvement to ...
原帖由 edison0918 於 29-8-2010 20:04 發表
I got the RA-tech hardkick kit and SD rocket valve installed....recoil wise, it's better and more solid since the hardkick kit adds more weight to the bolt carrier....
Installation was pretty simpl ...
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