We ran these thru the paces. We initially ran 100 rounds apiece in them in a solid rain setting with temps in the 90s in a rapid fire method straight out of the package. We buried them loaded in mud then wiped just enough off to make the gun function, speed drill etc.
For 90% of shooters they will be great. They wouldn't be my first choice if I was dropping into Mogadishu but for range, competition, stocking up etc. they seem like a great deal.
We did experience malfunctions with the amount of mud we buried it in which I expected but cleaning them is a breeze which is a big plus. We noticed a line forming on the top due to being slammed into the frame but it seemed cosmetic.
They only have a loaded indicator hole for the 17th round which can be a plus in keeping out gunk but a downside if you actually used it to do a quick check.
The price is awesome and I would recommend them to anyone wanting them for anything but true combat. I'm still on the fence with that.
and of course DSG has great service that I've used for years so no complaints there.
Time will tell and after a year or so of competition, hunting etc I will try and report back on spring wear.