[millrat]

Something I have not seen addressed is the reaction if any of different chemicals on the different plastics used on the su2000. Any one had a bad reaction to anything. Brake Cleaner, Degreasers, Gasoline, Anything?
Sometimes the reactions are delayed a day, week or more.

 

[SJ_40]

My understanding at least with Glock's polymer heat/UV,hot water,are more likely to degrade the polymer than anything else.
That said their is a difference between Glock's polymer and Kel Tec's. I stick to a firearm cleaner such as GunBlast powder scrubber,rather than Brake Clean.
My personal favorite is Ballistol mixed 30% to 70% of 70% or better isopropyl alcohol. It dissolves fouling very well and leaves a nice shiny smooth finish but not oily on the polymer which I blow it out with my compressor.
I have one Glock which is ten years old which shows no degradation of the polymer using Ballistol,still looks rather new.
Here is something I came across on another forum.
http://www.nrc-cnrc.gc.ca/obj/irc/doc/pubs/nrcc18642/nrcc18642.pdf That may shed a little light on polymers and aging effects. SJ 40