Gameface Verdict Marker BB's

[EagleDriver]

I have a CA M15A4 that I used with the market BB's. I ran about 4,000 BB's through it and just cleaned the barrel with a patch. I hadn't touched that gun in about a year, and when I put a battery in it, BB's would not feed. Opened it up and the hopup rubber was ruined from the marking powder where it had gathered.

Another note is that the mark it leaves is pretty light and some times not so easy to see, but with multiple hits on gear, for example, it is fairly easy to tell a hit.