This little 10/22 has been interesting. Love the thing, it's just been a bit more than an out of the box shooter. At the range last Thursday my Bushnell kept unscrewing on the eye side every magazine. Every single time and it was shooting high left from the zero I enjoyed for a few weeks. At first I thought maybe a buddy had done something to it while I was messing with the mini. Then I got home to commence a quick clean. As usual the bolt stop pin fell out, but it made a different sound this time. Two sounds. Clink, clink... Ruger has one on the way post haste, but I'm going shooting at the friend's ranch today! So I prepped on the interwebs trying to find a MacGyver way around it. Interestingly, I found a lot of folks running without one!?! In the end I hustled down to the local smith and chatted him up. Hacksaw a bolt, razor off a shank from a nylon bolt or glue stick were his recommendations. After making four stop pins out of nylon stock the glue stick thing wouldn't let go. I found some 1/4" glue sticks at a hobby store and I've got a lot of glue sticks now. And a stop pin made from it. Racking the bolt and releasing it aren't shooting it, but that glue stick has made the entire receiver area MUCH quieter. I shall see if it works today.