PM me your email address. I think that I have an electronic copy on my home computer.
I have an Armotech WG-65 which is an identical marker to what you purchased. The marker is very similar to a Spyder and is very durable if you keep it lubbed and clean. It is a loud marker. Don't expect it to go unnoticed. It is a replica of the real M4 so it's heavy to carry on the field, as you may already know since you have one. The barrel is a large bore, so go with large paintballs if you can. Let me know if you have any other questions. I'd take time to read some of the threads in the forum to see other's opinions.