Most of the large outdoor companies that have military divisions or want to sell to the military make their product in the USA. Most of them have to have all fabric ,hardware,insulation made in the USA for the products they make for the military.
Mystrey Ranch back packs,Kifaru packs,Gregory backpacks military line and some of their other top of the line packs, Camelback military,
Arcteryx leaf line is made in Canada but U.S. military considers them USA made and I have been finding Arcteryx expedition packs covered in Afghanistan dust in the local army navy store $199.99 used. Arcteryx 3 day Assault packs a 30 liter day pack for $40.00 used covered with stinky sweat, dust and most of the packs have holes in them from Iraq and Afghanistan.
Wiggys for synthetic sleeping bags,Outdoor research,All Cascade Designs sleeping pads, Some Sierra Designs I bought a black 40 degree dual 1/2 zip tactical synthetic sleeping bag with montbell licensed elastic baffle system made in the USA for $40.00 at Gi Joes in Oceanside,ca.
Source Water bladders that are non USA made but issued to the troops because they are the superior water bladder system are made in Israel.
Danner boots was already mentions but I loved them had the first pair of gortex /leather boot made By Early Winters and Danner. The USA military desert boots have a light brown or gum rubber colored sole and light Eva mid sole so it does not absorb sun heat and the sole will not become de-laminated in the hot desert sun. I had this happen to a pair of Asolo boots at Joshua Tree national forest heat looked like a cartoon with my sole flapping off the boots.
The desert warfare equipment from Iraq and Afghanistan at the used military stores look like they have been to hell and back.
Compared to the Vietnam era equipment that we lost more lives in that war.
Then we have are favorite ultra light backpacking cottage industry.
Terry
Terry