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Discussion Starter · #1 ·
I have 2 usp45 full size magazines that are cracked at the weld on the back top of the magazine. If you look closely to the left of witness hole 2 you can see the weld is broken. This is the second magazine that this has happened to.
This is causing "stove piping". Has anyone had this problem or am I doing something to cause this?
IMG_20210717_224011518.jpg
 

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I have1 that I knew of, but I still use it for range stuff as it has not failed me yet. No idea why, my mag looks much more used than yours though. Sorry to hear that, USP45 mags are not cheap.
 

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I've had it happen to one of my Mk23 mags that's pretty old. It works fine for casual range use, but I wouldn't use it for anything else.
 

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Discussion Starter · #7 ·
Thanks for the responses. I use the usp45 for bowling pin shoots and never drop the magazine to the ground. I only started looking at the magazine's closely when I was getting stove pipe malfunctions with certain magazines and found the cracks.
Guess I'll call HK CS and see what they say.
 

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Thanks for the responses. I use the usp45 for bowling pin shoots and never drop the magazine to the ground. I only started looking at the magazine's closely when I was getting stove pipe malfunctions with certain magazines and found the cracks.
Guess I'll call HK CS and see what they say.
my educated guess says that HK will say that mags are disposable items that should be replaced after prolonged use if they are old. Kind of like brakes belts and hoses on cars.

the optimistic side of me says HK will replace them because they have great customer service which I hope they do.

personally if they were mine I would relegate them to range use and purchase new mags for carry and competition.
 

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Thanks for the responses. I use the usp45 for bowling pin shoots and never drop the magazine to the ground. I only started looking at the magazine's closely when I was getting stove pipe malfunctions with certain magazines and found the cracks.
Guess I'll call HK CS and see what they say.
Probably the feed lips spreading from the cracked weld on the upper magazine body causing the feeding issues. Magazines are a disposable piece of the pistol, obviously they don't last forever.
 

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How old and used is the mag? As consumable as mags are, the crack strikes me as unusual as I’d venture to guess most of us have pistol mags kept loaded and in use for several years (easily decades) without issues.
 

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Those cracks usually happen when the mags are dropped on solid ground, but can also happen just from heavy usage (high round count). Most commonly happens with 45 ACP because the rounds are heavy. If the mags were new, with only a few cycles through them (unlikely), HK would definitely replace them for you. Can't quite tell from your picture, but I get the impression that yours have been well-used.

FYI & FWIW: Years ago I knew someone who had his cracked USP45 mags TIG welded, and they were good as new afterwards. The crack must be clamped tightly closed before welding, and the person doing the welding needs to be skilled at not overheating the steel. Afterwards, the welds need to be ground, polished, and painted.
 

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Discussion Starter · #12 ·
How old and used is the mag? As consumable as mags are, the crack strikes me as unusual as I’d venture to guess most of us have pistol mags kept loaded and in use for several years (easily decades) without issues.
Mags are about 15 years old but have not been used much until recently for bowling pin shoots.
 

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Discussion Starter · #13 ·
I called HK CS and found out the magazines are warrantied for 1 year. As these are well over that they are not covered. CS offered to sell me magazines at a discount which I took advantage of.

I still find it odd that the welds cracked considering that I do not drop them and they have no more than 500 rounds through them at this point. Either way I'm satisfied with HK CS.

Ryan
 

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Probably the feed lips spreading from the cracked weld on the upper magazine body causing the feeding issues. Magazines are a disposable piece of the pistol, obviously they don't last forever.
Before tossing those magazines, see if you can find someone with welding equipment. Spot weld the body and relegate them for range use. They ain’t cheap!
 

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Those cracks usually happen when the mags are dropped on solid ground, but can also happen just from heavy usage (high round count). Most commonly happens with 45 ACP because the rounds are heavy. If the mags were new, with only a few cycles through them (unlikely), HK would definitely replace them for you. Can't quite tell from your picture, but I get the impression that yours have been well-used.

FYI & FWIW: Years ago I knew someone who had his cracked USP45 mags TIG welded, and they were good as new afterwards. The crack must be clamped tightly closed before welding, and the person doing the welding needs to be skilled at not overheating the steel. Afterwards, the welds need to be ground, polished, and painted.
Agree with Orfeo, they can be repaired by a skilled welder.

Welcome Home Orfeo, 'bout time y'all came back...high 5's! =)
 

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Makes you wonder why they moved away from the polymer magazines on the USP 9/40.
 

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I have 2 usp45 full size magazines that are cracked at the weld on the back top of the magazine. If you look closely to the left of witness hole 2 you can see the weld is broken. This is the second magazine that this has happened to.
This is causing "stove piping". Has anyone had this problem or am I doing something to cause this? View attachment 298545
I have 2 usp45 full size magazines that are cracked at the weld on the back top of the magazine. If you look closely to the left of witness hole 2 you can see the weld is broken. This is the second magazine that this has happened to.
This is causing "stove piping". Has anyone had this problem or am I doing something to cause this? View attachment 298545
Call me old fashioned but I never had this problem with the old fashioned continuous welded seam magazines. I would be interested to know about how many rounds was fired out of this magazine. This is why it is so important to always keep a log on how many rounds you fire out of each of your handguns. I have done this for years and it lets me know when I should do preventive maintenance on my handguns..
 
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