Had this gem for a while. Over the last couple of years changed a thing or two here and there. First was swapping on a MagPul butt stock (sorry but the factory ATI just didn't work for me). Lever scout upper rail with el-cheap-o Bushnell red dot and a MagPul sling attachment. I had to file the front opening on it a little to get it to fit though. The forward angled grip was a little awkward mounted to the factory short lower rail. Luckily it's removable. Bought a cheap set of plastic rails and modded them to use the factory threaded inserts and contoured it to hug the bottom of the stock. Now the accessory grip is right where I want it. I am a short person at only 5'-1", so I had to work the ergonomics for that. I was kinda sad to remove the rear sight, but... The only un-changable thing I did to the gun itself, is thread a hole for a 3rd screw for the lower rail mount.