G&P low FPS
I need some help! I have a G&P woc M4A1 gbbr and its shoot slow as hell. I would like it to shoot around 350-375 with .25's. Problem is with .20's its shooting 310 using propane. Can someone help me with either problem shooting this gun because it is said to be able to shoot 390 using .20's and using HFC 134a gas. Or just let me know what upgrades I need.