Carver Customs Compensator 9mm Glock

Brand new, never used compensator for Glock G17 gen4. Bought it from someone on here, but decided to go in a different direction. In order to use this in your Gen4, you will have to replace your recoil guide and spacer to a gen3, figured I'd be upfront with this info since the guy I bought it from did not! RDSC has a good sized selection of upgrades for these parts though. I'm asking $70 just to get back what I paid. Located in Wallaceburg but willing to ship on buyers expense.