Pro Arms didnt go out of business - they were doing just fine. They got forced out because Zions Bank called the loan. Kinda hard to pay off the remainer of your business loan within 24 hours.
There is a nice little range in Lindon (between AF and Orem)
55 North 1400 West Lindon, UT 84042 801.785.1933
Rangemasters is awesome. They have an MP5 you can rent for 10 bucks. Nice.
Avoid Doug's on Redwood. Avoid at all costs.
There is always Custom Arms - look them up... they got a little range too.