Mods, not sure where to park this and perhaps Y'all are aware of this. I received this mailing from Voltquartsen and thought I'd pass it on. ...
Be Safe !!!
Unfortunately on the Ruger® MK IV™, heavy use can cause the Bolt Stop Cross Pin to work its way out and cause malfunctions. Our V-Lock Retainer is a simple fix to prevent this issue on both the target frame and 22/45™ frame.
Be Safe !!!