If I have any issues with Mckillans, it’s because it’s always a user error. Slight leakage out the front when trigger wasn’t even pulled. Found a video, disassembled the swivel gun and cleaned the metal ball and spring which ended up accumulating debris. No more leak, and no more unnecessary surging in my active 2.0 after that. Maintenance is soooo easy, And don’t get me started on on how many times I’ve dropped this thing and has still worked like new.