Hi!
The reference thread all is about
http://www.airsoftcanada.com/showthr...69#post1136069
Resume:
I want to replace my 360mm inner barrel (G&G gr16 m4 Carbine CAS version) for a 650mm. I buyed a 290mm silencer and it should be enought to hide the inner barrel.
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Someone recommende me to "You'll also need to switch out your cylinder for a non-ported one, and in the case of the 650mm barrel you may need a bore-up kit."
But I really don't know what a bore-up kit do. (pm me a model compatible please) And what the kit should contain? That why I hope someone will link one
Finnally what is a non ported cylinder?
Thank