Well, that's hard as I don't know your URLs and your parameters.
You need to come up with a solution that covers all, but also avoid any duplicate content issues by redirecting the parameter based URL to rewrote ones.
Let's say the file serving paintball masks and goggles is:
Paintball-Masks-And-Goggles-0Y.aspx
The parameter Manufacturer only shows the ones from that manufacturer. But does the naked URL shows all?
If yes, then you have to noindex all of those with the parameter set.
If no, then you can use some URL rewrite rules to make "static/easy to read URLs" using something like this:
RewriteRule ^Paintball-Masks-And-Goggles/(.*)$ Paintball-Masks-And-Goggles-0Y.aspx?Manufacturer=$1 [L]
This means that users accessing to /Paintball-Masks-And-Goggles/Empire will see the same page as /Paintball-Masks-And-Goggles-0Y.aspx?Manufacturer=Empire but on a friendlier way. That is if you have lots of manufacturers for paintball masks and goggles.
Or if you have many manufacturers but not that many products from each, you can also write a different rule like:
RewriteRule ^(.*)/Paintball-Masks-And-Goggles$ Paintball-Masks-And-Goggles-0Y.aspx?Manufacturer=$1 [L]
Which will produce the same effects, but putting the manufacturer name on the from of the URL: /Empire/Paintball-Masks-And-Goggles.
This not only involves creating some set or rewrite rules but also changing the code in your site to use the new URL structure you are creating with the rewrite rules.
If you don't have the knowledge to make this kind of changes, I suggest you contact a web developer to carry on all the necessary steps.
Feel free to private message me if you need more help.