Upgrades for G&G GC16 13.5" Wart Hog

[Wilko7]

Hi all,

I am fairly new to Airsoft. I made the switch from paint balling to Airsoft around 6 months ago. I have been using the G&G GC16 13.5" Wart Hog for the past few months and feel that I want to get into weapon modding.

I was wondering if anyone had any ideas of parts that I can use to increase accuracy/consistency?
It has a 6.03mm G&G tightbore fitted and I am running it off 7.4v lipo's.

Thanks

Alex