Lately when shooting my 2 Shields the last round in the magazine sounds like its got a half charge of powder and will either FTE or stovepipe. All previous rounds are fine. Its always the last one in the magazine. And I'm talking a multitude of mags. I'm baffled. Any ideas??
Got a weird problem going on with my 2 Shields
- Thread starter kramden
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Broken or non-working extractor?
How many rounds through the guns? Ever cleaned the extractor channel? How often has this occurred? Every time or intermittently? Factory ammo, or reloaded? Brass, aluminum or steel cases? What caliber(s)? Ported or regular barrels?
Broken ejector? Do you know what to look for to see if the ejector is working?
Either one of these devices if not working properly could cause the symptoms you describe--not the half charge noise, which I doubt is actually occurring.
After the cartridge fires, the case pushes back on the slide face forcing it rearward. The extractor does not really pull the case from the chamber unless it is stuck. Aluminum and steel cased ammo get stuck more than brass. The extractor helps keep the rim of the case against the breech face, like a guide, which then allows the ejector to push the case out of the ejection port. The extractor also guides the rim and cartridge into the chamber on loading. However, most guns can still function with a broken extractor.
The ejector does its job by kicking the rear of the case toward the ejection port close to the end of a slide's rearward travel. If it is broken empty cases are ejected by pressure from the next round in the mag rising which pushes the case almost straight up. Most guns will function with a broken ejector--until the last round. Stove pipe jams are common under this circumstance. This sounds like what you have described.
How many rounds through the guns? Ever cleaned the extractor channel? How often has this occurred? Every time or intermittently? Factory ammo, or reloaded? Brass, aluminum or steel cases? What caliber(s)? Ported or regular barrels?
Broken ejector? Do you know what to look for to see if the ejector is working?
Either one of these devices if not working properly could cause the symptoms you describe--not the half charge noise, which I doubt is actually occurring.
After the cartridge fires, the case pushes back on the slide face forcing it rearward. The extractor does not really pull the case from the chamber unless it is stuck. Aluminum and steel cased ammo get stuck more than brass. The extractor helps keep the rim of the case against the breech face, like a guide, which then allows the ejector to push the case out of the ejection port. The extractor also guides the rim and cartridge into the chamber on loading. However, most guns can still function with a broken extractor.
The ejector does its job by kicking the rear of the case toward the ejection port close to the end of a slide's rearward travel. If it is broken empty cases are ejected by pressure from the next round in the mag rising which pushes the case almost straight up. Most guns will function with a broken ejector--until the last round. Stove pipe jams are common under this circumstance. This sounds like what you have described.
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Yup. As usual, initial information is too incomplete or inaccurate to be of much help.
With the information given, my only thought would be a magazine issue. Maybe a follower is slightly holding it out of battery? Is it with the same magazine or all of them? How does the brass look when you pull out the FTE? Is it blown out or cracked badly? Like said above we need more info. Try loading two rounds in it and inspect the position of the slide before shooting the last one. How many times has this happened? How dirty is the chamber, is there a burr in it? You said lately, what's the approximate round count?
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The Norseman
Member
S&W M&P Shields Magazines
I read your posts, and noticed that you said you
clean the Guns after every use.
Just a thought, don't get offended, do you take the
magazines apart and clean them?
Also, are you limp wristing and anticipating the last
round while shooting?
Also, I once helped a guy at the range with the same
problem, turned out the magazine with the extension
was not engaging the magazine well correctly.
I read your posts, and noticed that you said you
clean the Guns after every use.
Just a thought, don't get offended, do you take the
magazines apart and clean them?
Also, are you limp wristing and anticipating the last
round while shooting?
Also, I once helped a guy at the range with the same
problem, turned out the magazine with the extension
was not engaging the magazine well correctly.
Thanks , I'll check.
Rastoff
US Veteran
The gun can't cause a "half charge" problem with the round. So, it's not an ammo issue.
Also, I'm missing something. You can't have a type II (stove pipe) malfunction on the last round.
Also, I'm missing something. You can't have a type II (stove pipe) malfunction on the last round.
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Flyingfool
Member
Why can't you have a stove pipe on the last round? Is it because the slide is held back with the top of the empty mag and can't close far enough to trap the last fired shell case?
Magpul brand, for the shield? Or did you mean ProMag?
martybee
Member
Inconsistent Information from OP.
Forum members can't get a good handle on the problem!
Perhaps after a few more posts, we'll find out.
Forum members can't get a good handle on the problem!
Perhaps after a few more posts, we'll find out.
Rastoff
US Veteran
Correct.
This is a type II or stovepipe malfunction: (failure to eject)
After firing the last round, the slide is held open. With the ejection port fully open, there is no way the spent casing can be held. Thus, no type II malfunctions on the last round.
LedFowl
Member
Kramden, I did a Google search on "won't eject last round." You might find some ideas there. Good luck.
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Magazine springs.
I've noticed quite few owners of the M&P Shield experiencing issues with magazines. Mostly they are having difficulties with loading magazines to full capacity or inability to insert magazine into a mag well. When I purchased a Shield, I had issues with my mags. Upon examination I found several issues. The springs are made from inferior steel, springs are longer than they should be and when they are compressed, there is not enough space for the full load, the lips of magazines are rough from stamping.
I purchased Extra Power Magazine Springs from Wolff Gunsprings, which are made from better spring steel and thinner. With a small file I cleaned edges of the lips. And finally I coated inside of mags with three layers non-sticking teflon coating.
I've noticed quite few owners of the M&P Shield experiencing issues with magazines. Mostly they are having difficulties with loading magazines to full capacity or inability to insert magazine into a mag well. When I purchased a Shield, I had issues with my mags. Upon examination I found several issues. The springs are made from inferior steel, springs are longer than they should be and when they are compressed, there is not enough space for the full load, the lips of magazines are rough from stamping.
I purchased Extra Power Magazine Springs from Wolff Gunsprings, which are made from better spring steel and thinner. With a small file I cleaned edges of the lips. And finally I coated inside of mags with three layers non-sticking teflon coating.
It can if......
It can if the slide doesn't go far enough back on the last shot to lock, which would mean that something may be interfering with the slide on the last shot. And that would indicate that something is wrong with the connection between the mag followers and the gun. Why both guns? You got me there, unless it's the mags and they all have the same problem. When you put a couple of dummy bullets in the mag and work the action, does anything seem different about the way the slide moves if there were more bullets in the mag???
It can if the slide doesn't go far enough back on the last shot to lock, which would mean that something may be interfering with the slide on the last shot. And that would indicate that something is wrong with the connection between the mag followers and the gun. Why both guns? You got me there, unless it's the mags and they all have the same problem. When you put a couple of dummy bullets in the mag and work the action, does anything seem different about the way the slide moves if there were more bullets in the mag???
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jtaylor996
Member
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I tend to agree. I think it's a mag issue, and he's using the same mags on both guns.
That's an assumption.
