Just delivered. I've been using the Hitachi version for a while. I wanted a depth adjustable gun and Hitachi no longer makes this model of nail gun. At first glance it looks just like the Hitachi NR83. I will update it after I start using it. So far I'm very happy with it. UPDATE *** After about a year of use in light service, seals are leaking from the top vent. I took it apart and found several o-rings were flat. I'll try swapping them out and see if that helps, maybe it's just poor workmanship that's wearing them down too quickly, or were they cheap rubber? I will update again after trying this fix. I really wanted this gun to work, but I'm not sure it will last.