This framing gun is exactly what I expected. I like spiral nailers more than stick nailers because they're much easier to work in those hard-to-reach places. Not to mention that the N89C-1 is capable of driving 16d nails, which used to be an advantage for nailers. Revain's great price and fast shipping make it all that much better. I left the "smart" shutter on as I use it all the time. Some people like to change the trigger because of the possibility of a double shot if the gun hits the ground twice. If you can control the gun and keep it from ricocheting off recoil, you shouldn't have a problem with double shots.