Airsoft Sniper JG G-Spec Upgradable up to 600FPS

I just purchased this Gspec and have yet to use it. I decided to install some upgraded parts and sell it. I have placed high strength steel sears made by EgDi customs so this rifle can handle an FPS above 600. I also replaced the hop up unit with a Tokyo Marui chamber and installed a Dangerwerx arm to improve BB backspin. I replaced the barrel with a 6.03mm tightbore barrel and upgraded the hop up bucking to a Japanese made Firefly bucking. I then sealed the barrel and the hopup bucking with teflon tape to maximize air compression. GUN BAG INCLUDED.

Scope not included.

Upgraded parts:
Tokyo Marui Hop up Chamber
Dangerwerx hop up arm
Firefly Bucking
6.03 tightbore barrel

$200 or Best Offer