How much do you think my g&g sr series is

[turtle10]

Upgraded- 

longer tightbore inner barrel

New hand guard 14.5” I think

supressor(nothing inside cuz it sounds really cool but I have the foam and cap)

new hop and rubber

stippled grip

Few new gearbox parts

i also have a t1 sight, 5 mags (3 magpul branded ones, a hex mag and another one I can’t remember the name of)

2 11.1v lipos 

a sling

spare grip

View attachment 144627

 

[Galvatron]

Unfortunately, unless you have the original parts, upgraded components won't necessarily increase or preserve value, especially when you haven't specified the brands and models of the upgrades.

I would say the normal 70% of current retail for the original gun and the RDS should be your base line. You should expect the sling, batteries and the unnamed mag to the be wiggle room for negotiating on price.