Not Effective on Parkerizing
Took 2 soakings along with stainless steel brush scrubbing to get a Browning Hi Power slide and frame clean on the exterior surfaces. This was after removing the epoxy finish with paint stripper and a grinder wire wheel. It did finally get the exterior clean but all the internal parkerized surfaces were left untouched. I mixed at 3 parts acid to 1 part water. I suspect it would be more effective on traditional gun bluing but didn't help me much on this job. The results weighed against the substantial price not worth it in my opinion unless it's being used on a blued gun and it remains reusable for several jobs.
