I had one of the older ones made from cast metal of some sort ( not a good quality metal). If it never breaks, you'll have a nice little gun. If it ever breaks....heaven help you. Ruger will treat you like a bastard stepchild. They won't work on it. They won't sell parts for it. They won't suggest someone who might have parts or work on it. They won't offer any suggestions at all, other than to offer to sell you another Ruger...... Numrich Arms is your friend , or at least was my friend back when I had mine. I traded it a couple of years ago for an AR. The gun is a great concept but Ruger did a mediocre job, in my opinion.