Stuck all the time. After speaking to Senco I was told to remove the small stand that attaches to the magazine rail and bolt it to the front when using staples shorter than 1″. But I have to take it off if I want to use longer staples. This pistol rest looks nice, but it's a piece of junk. Since someone using multiple staple lengths is adding one more step to the mix, it's a pain. Stay away from it and buy another cheap brand.