Quote from: sw.sharpe on January 11 2014 06:40:00 PM MSTyeah,i had the same problem with mine as well.tried 3 different mags and still didn't work so I modified the slide catch portion of the magazine on an anvil and made it work.no problems since then.
Hello all. New to this forum, but not new to shooting or the 10mm. I purchased an RIA TAC 1911 II FS in 10mm, got it home and was unable to get the slide to lock back with an empty magazine inserted in the gun. Switched out the stock RIA magazine with magazines from a Kimber (Eclipse Custom II), a Dan Wesson (RZ01) and a Tripp magazine - the Tripp solved the slide-lock problem and worked the best. I was eventually able to get the gun to lock back with the stock RIA, but needed to shoot ~100 rounds through it first. Here is the link to the Tripp magazine <http://www.trippresearch.com/store/store_1911.html>. Hope this is of some help.
-steve