Airsoft M14 CO2 M9 Sniper Ejecting Shells in Flint, Michigan For Sale

I have for sale or trade a AGM M14,co2 m9,and a shell ejecting sniper the sniper is not working it is the hop up bucking I just don't know how to fix it so its probley a easy fix. It also includes xxxx unopened king arms bbs. also included universal smart charger.
local pickup
fps for m14: 300-350 useing .20
fps for m9: 325-375 useing .20
fps for sniper: 300-325 using.20
Make me a offer or i will trade for video game systems such as : wii, ps3, xbox, ps vita, 3ds,or magic the gathering
Call or text me at 810-853-xxxx