Again, OP: What are you getting right now?
The specs I'm getting say that the JG MP5A4 shoots 360 out of the box. If you want 350 (for CQB I presume) then downgrade to something like an M100 or M110.
If youre getting significantly less than 360 right now then take it to a gundoc to check it out.
ಠ_ಠLess QQ more Pew Pew
READY TO >> RACE