try an Rhop upgrade, Some people say they can add anywhere from 25-100 extra feet of effective range. It works best for giving heavier bb's less drop. so on a sniper platform it would probably have the best performance increase
Its a tricky process, but its arguably the best thing you can really do as far as a hop up upgrade. Its relatively cheap to do, but it takes alot of fine tuning
you can get the patches at airsoftgi
IR hop kit (probably cheaper on a different site)
http://www.airsoftgi.com/product_info.p ... s_id=10710installation guide
http://ratashaka.blogspot.com/2012/05/r ... anual.html
YOU SIR!!!!...... DO NOT HAVE ANY PANCAKE MIX!