I have used this stuff before on shotguns after a lot of clays to blast the action and barrels out but can I use it on my polymer handgun. I shot an amateur IDPA match Wednesday and it was muddy and I dropped 2 mags in the water and mud on the clock so my dumb butt grabbed them and seated into the gun and finished. I went to clean the gun and noticed that there was grey muddy type substance on the trigger spring and on the inside of the slide release so I picked all that out and wiped the inside of the frame out with an old cotton t shirt and it was filthy. you would have thought a mechanic wiped his hands on that shirt. this got me thinking about the powder blast break free but I would imagine it might not play will with the polymer. I also have a lot of grit on the slide rails and spring as ive ran about 600rds through it without cleaning so can I blast those parts?