can anyone reccomend a small,inexpensive blasting gun to use for blasting a couple guns to be Cerakote'd exclusively? I am hoping to find something between $20-$30 like you can get at Harbor Freight but am wondering if anyone has tried them so I don't end up frustrated and stuck with a worthless gun? I really don't have any uses for it other than the 3-4 guns I want to re-finish. Any advice is appreciated.