They were all second version. The first version didnt have the forward assist reverse latch thing. You have to admit one thing even if you own a ICS M4 and it works great. No mater what you do to the thing it always sounds like crap. Makes a unheathy sounding whhring noise. I can always tell which guys are using the ICS on the field just by hearing them firing. Im like "Eh man I think somethings wrong with your...... Oh wait thats an ICS. Nevermind"
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