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Posted: 6/14/2015 12:55:40 AM EDT
Had my first malfunction yesterday! In 3 years I've owned a few ARs and I've never had one until yesterday and I don't even think it was the rifle. It was my first trip to the range with the weapon (brand new BCM middy  ) and I'm THINKING it was a defective cartridge. However, that's what I'm here to find out as I thought I'd see if maybe somebody here knows what might have caused it.
The rifle chambered the round clean, mid mag or so, and failed to fire after the trigger was pulled and the sear released the hammer. I thought, hmmmm, released the mag and attempted to rack the CH to extract the round. However, it wouldn't let me. It wasn't until about the 3rd or 4th attempt that I was able to yank back the CH finally ejecting the unspent cartridge. Now, I should've stopped and taken a minute to inspect the round but, not thinking much of it, I reinserted the mag and proceeded to have fun. I still don't think much of it and I finished the day without issue, but I really wish I would have investigated a bit more. It wasn't until later I was like, 'damn, what the hell was that'. So, what the hell was that? Anybody got an idea? Thanks. |
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I'd chalk it up to ammo also. With regards to the round being stuck, could be just a tight chamber that still needs a little breaking in. It will extract under normal firing conditions but, would be just a tab harder otherwise till broken in.
It could also maybe be the ammo again and out of spec case but, that's just speculation. Out of all the AR's I've owned and still own, I personally do not trust it fully till I get a few hundred rounds through it and then see if I have any issue moving forwards. As long as the issue isn't repetitive, I think you'll be fine. |
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Quoted:
This seems to be a popular belief, but I don't think it's true. Quoted:
Quoted:
Brass could have been oversized, federal xm is rejected military ammo This seems to be a popular belief, but I don't think it's true. I could have sworn that federal said that the xm stuff was from rejected lots, but i guess I was mistaken |
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Quoted: I'm most curious as to why the round was stuck. I mean, okay, round was a dud, but what caused it to get stuck? it never fully chambered in the first place. Most likely due to out of spec brass or overall length. Ive had 4 rounds of AE XM193 fail to fire in the past 5 years. Most of it was from lots made in 11 or 12. |
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Like others have said, could have been a defective round.mb You mentioned it was a new upper, did you clean the chamber with a chamber brush? Could have been excess grease/preservative in the chamber preventing full chambering. That would also explain why it was so hard to eject the round. Cheers  |
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It's tough to say, for certain, about what all "X" ammo is. But read this, specifically about 193... (from this thread http://www.ar15.com/archive/topic.html?b=1&f=5&t=1122634 )
AFSOC [Team Member] 12/7/2010 4:23:12 PM EDT "So much speculation and so many WRONG answers. OK here is the deal, I work at Lake City and the SCOOP on the XM-193 is thus There iss a line setup in Building 1 to produce XM-193 product for the Commercial Market. This is the same line that also produced AE-223 So that all aside it is FIRST RUN, FIRST QUALITY ammunition produced at Lake City Army Ammunition Plant. Commercially boxed on premises. There are other XM products as well.XM33, XM-556 and XM80 but those don't get produced as often. Some are lots that failed for some reason or another others are first run, the XM-193 is First Run ammunition. There is your plain and simple answer. Cases are drawn from the EXACT same cups used for .MIL ammo Bullet Jackets and Lead Slugs are made on the EXACT machines from the EXACT materials as .MIL ammo Primers, Powder etc are the same materials as .MIL Tested to the same standards as the .MIL production." |
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Quoted:
I could have sworn that federal said that the xm stuff was from rejected lots, but i guess I was mistaken Quoted:
Quoted:
Quoted:
Brass could have been oversized, federal xm is rejected military ammo This seems to be a popular belief, but I don't think it's true. I could have sworn that federal said that the xm stuff was from rejected lots, but i guess I was mistaken Military doesn't use 193. |
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Quoted:
I could have sworn that federal said that the xm stuff was from rejected lots, but i guess I was mistaken Quoted:
Quoted:
Quoted:
Brass could have been oversized, federal xm is rejected military ammo This seems to be a popular belief, but I don't think it's true. I could have sworn that federal said that the xm stuff was from rejected lots, but i guess I was mistaken You were mistaken. That might have been true decades ago, but not today. I'll point out that factory ammo actually CAN be defective without being "rejects." In billions of rounds, some failures, out of spec cases, and just plain goofy stuff is bound to happen. I once got a box of Winchester Q3131 that had TWO defective rounds. One didn't even have a rim! The other had the rim so goofed up it wouldn't have chambered. Stuff happens. |
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