Stainless can be dipped, ultrasonic, or steel pin tumbled with no issue.I am fairly new to the NFA addiction so I apologize if I ask too many questions, why are stainless baffles better? The main purpose for this can is just pistols like 45 and 9. My 762-sd is what I use on my 300 blk and its stupid quiet with subs. The 45 can will be mostly used on the FNX tactical.
Aluminum can't be dipped, technically shouldn't be ultra sonic(has yet to cause issues on mine), and some claim steel pin media is a bad idea. Additionally it's just more durable.