The Tristar are awesome guns! I currently own 3 of them, all in 20g.
I bought one a few years back that I kept new in box for a few years, went to take it out and set it up to find out the mag tube was threaded crooked. Called CS, shipped it to them, and I had it back within a week and a half, fixed. Now I had bought this over 3 years before I found the issue. Technically I think it was outside of the warranty period, yet they didn't charge me a dime. I'll be a Tristar fan for a long time, just from customer service alone.
I picked up one of their pistol grip in bottomland last year and I absolutely love it. You can't go wrong with Tristar in my opinion. I'll shoot it up against any of the big names, yet pay a lot less.