I use good quality pneumatic nail guns in my job. This is normal and I would recommend it if you have your fence stapled. I would give it 5 stars but it misfires a lot. I always oil my nail guns and this one was no exception. Can't confirm if it's a gun or just staples. I used the manufacturer's recommended 1-9/16 staples. I fired the gun at 95psi and when it released the support it ended almost perfectly every time. Several had to be achieved. I ran about 900 staples through the machine. Overall it's pretty well built and a little heavy, but manageable. What I liked best was that I didn't have to swing a hammer for hours to hammer staples into my new fence. My fence was made from feedlot panels stapled with 2x6 PT lumber.