I got this bayonet lug for my 870. I wore it to the range to see if the bayonet would stay put under recoil. The bayonet stayed attached to the lug, but the lug itself scooted forward on the magazine tube extension after about 10 rounds, so that the bayonet was hanging off the front of the shotgun. Any suggestions (other than 'get a Mossberg 590')? I was thinking maybe some type of grip tape around the magazine tube extension might fix it. Or, I suppose I could have the thing welded to the barrel, but that might ruin the barrel. Maybe I could glue it to the barrel.