I just got a new 10/22 for my birthday about 3 weeks ago. I finally had a chance to take it to the range yesterday. After shooting about a hundred rounds through it i laid it down on the table. My buddy was going to shoot it next but after he shouldered it he laid it down quickly. i asked him what was wrong and he said, "You're front sight is laying on the ground." It seems as if the front sight just fell off unprovoked. i dusted it off and put it back on but had a hard time getting it to stay on. It fell off again before we left. So now I'm wondering if i should send it back to Ruger, try to get it to stay on with some kind of adhesive or just go get new tru-glo sights. Any advice would be appreciated.