It's number 610.And, it arrived with the tip of the suppressor pushed back into the suppressor. I'm not sure what to do with it. It looks like a beer can that has been slightly smashed, lengthwise. I'd really just rather repair my gun, but I am pretty sure that if I send it back, it'll get replaced with another gun, and I like having one of the first 1,000 guns. I'll post a picture tomorrow. Maybe you guys can come up with some good ideas.