Savage Detachable Mag Conversion Stock SA Converts Short Action (SA) Savage model 10 series Bolt Guns to Detachable Magazine compatibility (order mags separately). We have partnered with CDI Precision to install detachable magazine bottom metal in our most popular Choate Tactical Stocks for the Savage model 10 series rifles. Here is how to order: First, Is Your Rifle Short Action (SA)? Short Actions are 2 digits (10, 12, etc.). Long Actions are 3 digits (110, 112, etc.). This stock is for Short Actions. Second, Is Your Rifle Staggerfeed or Centerfeed? Simplest way to tell is to remove your gun from the stock. Staggerfeed will have the magazine box attached to the receiver (see photo above). Centerfeed will have all of the magazine parts in the stock. Third, Do You Have a Bottom Bolt Release or Side Bolt Release? Our stocks are set up for side bolt release. We do have a simple adaptor service for guns with a bottom bolt release... Please call for details if you're interested. That's It! Order the SA Staggerfeed or SA Centerfeed Conversion Stock. Magazine Compatibility: This conversion works with any Accuracy International (AICS) Short Action compatible magazines. This includes Magpul 549 amd 579 models and MDT AICS.