Passing this along to any of you who own a Ruger American Rifle in .17 HMR or .22 WMRF:

We have determined that Ruger American Rimfire™ rifles chambered in .22 WMRF (Magnum) and .17 HMR manufactured between November 17, 2013 and January 8, 2014 were manufactured without a vent hole. This hole appears just below and behind the serial number on the left-hand side of the receiver. The hole does not serve any function during normal operation of the rifle, but is a safety feature and may help vent gas in the event of a problem such as a ruptured case head or bore obstruction, for example. We want to recall the rifles and add the vent hole.

The link gives details on what exactly to look for in your rifle and how to get it fixed.  Please spread the word.  This is a real gun safety issue.  Maybe we can get MAIG or CSGV to post this on their websites, since safety is their stated raison de etre.

H/T to my sister from another mother for passing on the word to me.