Description
The CST 2 ndGEN Auto Bolt Stop was designed to work with the Grand Masters Ruger 10/22 Match Bolt to give you the last shot hold open feature in your Ruger® 10/22®. The Auto Bolt Stop when installed uses standard, unmodified magazines. The CST 2 ndGEN Auto Bolt Stop will ONLY work with the Grand Masters, and will not function with the factory original or aftermarket bolts.
