While I'm not sure how they will hold up if in contact with a suppressor. I have a couple pair of Prana Stretch Zion Pants that have been great. I wear them at the range and on hikes. Living in South Carolina I appreciate how quickly they dry and how lightweight they are. While they are expensive, I found my last pair on ebay for like $35.

You could also try the Kuhl Radikl pants. While not as light as the pranas they do add a bit more durability as they use different materials in higher impact areas with stretch sections in areas that require it (like crye combat pants).

Those are two that I have found work very well for my uses.