i was looking into upgrading my echo1 Red star Rpk. http://www.evike.com/product_info.php?products_id=33313 . I am getting a auto wind mag but not sure what else,as i have a lot of money saved up. I want to have it shooting faster (as it shoots slow). also some more range. I know i would need a new motor and barrel but i'm not sure what ones to get. Thank you in advance for any help.Sorry for bad grammar or spelling.