This case is very well built. I have no doubt like other Pelican products that this will keep the water, dust and grime out of the case. The foam is rigid in all the right places and has a very secure snug fit for your "tools". The case will fit various size pistols however the 5.1" length slides will have a hard time fitting. Anything more than a 21rd mag will have difficulty fitting and closing the lid. I ended up having to send it back since this was to be used for a 2011 with longer mags. I didnt want to have the extra pressure on the top of the mags (pressed into the bottom of the case foam) for extended periods of time. The fear here is that they may deform causing failures. for a visual, the bottoms of the mags stick out about an inch from the top of the foam. It will fit in the lid closed BUT the tops of the mags (follower area) will be pressing hard into the foam, this could cause deformation.If i had mags and tools to fit in this size case i would keep it. It's a very nice case! It just needs to be about 1" deeper so the mags do not press into the foam. My P365macro mags fit fine.Like i said, good case. just didnt work for my needs.