I am planning on upgrading my 18c aep with a slew of nineball products, and I would like to increase the battery capacity for a higher rof. I think i've found a lipoly battery that will fit inside the gun with little modification;
http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXRVP5
And im not interested in the Marui Pro Light, any suggestions?