...at least if you have a Springfield Armory TRP. I traded in my SS Loaded and upgraded to the TRP about two months ago. When I bought the original gun a few years back the 47D 8-round mags from Wilson Combat seemed to dominate the recommendations from just about every direction. They worked great with my loaded. Not so with my TRP. They are half a hair too short on the follower and the slide doesn't lock back when empty about 75% of the time. Quick research on other boards revealed this as a prevelant trend. Solution: Trade in the 47D's and get some Chip McCormic mags or some from another reputable retailer. WC mags might be the best selling 1911 mags out there, but they are not the right tool for the job with a TRP.