Upgrading my SR-16

[HaZarD SFD]

I bought my gun off Balzerk.. He was the 3rd owner and well his tech guy
he sent his gun out to in quebec literally fucked it up.. heres the link to
that issue and pics of the mechbox that is literally a DR. Jekyll on the insides
MecBox and Issues Link well I just chronied my gun and am really satisified at the
results.

SR-16 Chronied on March 11th

.20s
350 FPS

.25s
305 FPS

I am not sure why the dramatic drop in FPS for the .25s as per foxes M16
drops 15 FPS when he puts in .25s so I am thinking of getting some new
upgrades for accuracy and distance.

Systema Flat Torque Up Gears
Systema Tighbore Barrel. (dont know what length because of OPS silencer to be added)
Systema Teflon Cylinder Set

From the above list will it help with what I am trying to do?