I purchased 3 of these mags to use in CMP "Vintage Bolt Rifle" matches. I used all 3 in a match at Camp Perry, Ohio on 7/23/2017.
They worked perfectly! My original serial numbered mag is in storage. You better buy more than one at this price.

Fits just like the original and have no issues with fit or feed, have 4 magazines total now,this sure beats buying surp/at 70-100 apiece. Figure 4 magazines is plenty for the rifle - at this point, though Id love too have 10 or 15 :)

Fits great, feeds fine and is a cheaper alternative to hunting down surplus Swiss mags

Within two months of shooting occasionally, they started fitting so loosely that it caused malfunctions unless you held the magazine's weight up into the rifle, a K31. Then, a week later two of the three magazines had their latch break off. I am a competitive shooter who takes good care of my gear. They were not abused in any way. My original magazine is 70 years old and flawless.

I found this product in between production cycles, and had to wait almost a year to be able to purchase. They appear to have sold out again, so I'm glad I got mine! Function, quality, appearance, nothing is left to be desired. Fantastic magazines, I would definitely buy again.

Purchased to go with my K31 and the fit was perfect, no problems at the range and the price lends itself to having as many as I want!

The only experience I have had with aftermarket mags was the Promag for my Enfield and it was junk. Sent it back. Was leery of this one for the K31. Took the chance and the only thing I can say is I should have bought another while I had the chance. I will buy at least one more when they get them back in stock. Perfect fit and function. Great rifle, great magazine.

I bought two of these babies a few months ago. Absolutely flawless craftsmanship! Both of my new magazine functioned and fit in the rifle exactly like the original. They hit the nail on the head with their attention and work. The only difference is that the two new replacements are brand spanking new looking!! A person couldn’t find a better K-31 replacement magazine. I’m going to get 4 more, one for each pouch on my Swiss military leather ammo bandolier!

I finally broke down and bought one of these since replacements are ridiculously expensive and because the charging clips are neigh impossible to find these days. It's great. I'm going to replace the original so that it doesn't get wear and use this one from now on. It's tremendously well made, and honestly, I might even get another. I wish it wasn't 50$, but i can see the work that goes into it -- and as an HK fan, I'm used to paying for expensive mags. :)

Finding original K31 magazine parts is a difficult, frustrating, or expensive undertaking! These magazines fit the bill exactly! These fit in my rifle with no fitting required. I haven't taken it to the range yet, but it should feed just fine! I'm so glad these magazines are available - after my original spring broke I was afraid I'd have to spend a lot of money to get a replacement. For a new production one, this was a bit pricier than I'd like, but at around half the price of an original magazine I really can't complain.

Feeding the K31 using stripper clips can be frustrating, and having only one magazine for your K31 means reloads take time. Fortunately, Keepshooting has your back!
These mags are fantastic. These magazines look identical to the magazines in my K31 rifles. They function flawlessly as well. Given the value of matching number rifles, and the difficulty in locating original magazines, I've kept the original mags in the safe, and use these on a regular basis! Keepshooting does it again!

This is exactly the same as my original, with a tighter spring and better bluing

This is the best reproduction magazine I have ever seen! The only difference I could find is that the KeepShooting magazine attaches the follower with a hollow rivet while the original Swiss magazine used a solid rivet to attach the follower. The quality of this magazine is outstanding. You will never be sorry if you buy this magazine. I wish they would make a magazine for the 1911 series of Swiss rifles and carbine.

Mag fits and functions like the original, I was skeptical until I received this mag it is very well made, that is why I gave it a 5.

This fits my K31 just fine and feeds rounds fine. Would have given it 5 stars if the finish matched my K31 better. Function was flawless however and shipping quick.

The rivet on my mag broke, so needed a replacement. I got one of these about a week ago, and it is exactly like the one that came with my gun. Fits perfectly and works great.