Hi,
Price depends on the finish and work that needs doing. I get each job quoted.
If the material is scratched and you need anno removed, polish the scratch out then bead blasting to get back to dust finish.
Different grades of ali need different dip times, does anything need corking, ie barrels to stop the finish been removed and lastly the hanging points, is it going to be difficult to hang the part in the tanks.
More tricky the job the cost can go up.
They don't offer a marker strip, ie or assembly that other do so there is another variation in the quote.
Regards
Ed
good luck selling next gun. if i had money id have it