No gun installation instructions? You have to find out for yourself. I noticed a rapid fire gun. I thought it would look like a "laser," but the gun actually "sticks," if you will, while you're firing, meaning you can hear the shots miss. Spend $120 and only use 2 mods (rapid fire and recoil assist) I thought it was money well spent, no! But their website looks legit but doesn't have any weapon customization guides. When I called and spoke to one of the guys he said they were "working on a manual" to install all the different guns but haven't gotten around to it yet? Serious?