http://www.wgcshop.com/wgc2008/main/content_page.php?search=searchItem&rs=griffin&skeyword=griffin
Here are at lest two that would look great on that build of yours.
A simple steel filer will do. Brigg talked about the same area as where sacairsoftsn00py made his mod (whick looks really good). The part that gets into contact with the blt catch on your bolt carrier.
You might need to remove the bolt catch and bend its arm that connects to the bolt catch riser arm of the magazines. But you have to be careful with that because if you bend it too much it might be activated too early. You find further informations about that in my review I linked.
And check the bolt catch, does it move freely? Dirt might prevent it from doing so.
Can you shoot a pic about the bolt catch, please?
The pistol grip should not have anything to do with the bolt catch. Unless the part that holds the grip and the buffer retainer gets pushed up so it prevents the bolt carrier from moving freely. Do you feel any difference with the Magul grip when you rack the handle?
The weaker (?CQB?) spring is a KSC factory one.
I made a brief written article about Akira's mod here:
http://www.arniesairsoft.co.uk/forums/index.php?/topic/205168-ksc-m4-cqb-r-system-7-ii/page-3
Those Pmags are awesome.
Gentlemen, I seek the help of those who own or saw VFC NT4 suppressor kits. Can you tell me if VFC has the heat shield stamped onto the silencer body, or that is just held in place by a screw like at the G&P one?