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Posted: 10/25/2009 10:09:59 AM EDT
| Just finished my first build. Decided to work a couple rounds through the action. Inserted mag, dropped bolt by bolt release then racked bolt a few times with charging handle. While picking up the rounds I noticed that the primers had small dimple from firing pin. Whats up with this? Also did the same thing with a factory DPMS that has been shot a few times. Got the same dimples although smaller. |
| Figured as much after the factory rifle did it but its a little nerve racking when you don't realize this happens until you do it with a build. I was thinking what the hell did I do wrong and shooting a hole into mommas very new and nice bed would get me kicked out of said bed and into the dog house. |
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Figured as much after the factory rifle did it but its a little nerve racking when you don't realize this happens until you do it with a build. I was thinking what the hell did I do wrong and shooting a hole into mommas very new and nice bed would get me kicked out of said bed and into the dog house. Maybe it's time to read a little about your rifle before you fuck something up... |
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Figured as much after the factory rifle did it but its a little nerve racking when you don't realize this happens until you do it with a build. I was thinking what the hell did I do wrong and shooting a hole into mommas very new and nice bed would get me kicked out of said bed and into the dog house. Maybe it's time to read a little about your rifle before you fuck something up... Some can be a little direct, but he has a point. Dry running with live ammo isn't always prudent with this type of weapon as all it would take is a thin/weak primer and you end up with a kaboom when you least expected it. |
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Figured as much after the factory rifle did it but its a little nerve racking when you don't realize this happens until you do it with a build. I was thinking what the hell did I do wrong and shooting a hole into mommas very new and nice bed would get me kicked out of said bed and into the dog house. Maybe it's time to read a little about your rifle before you fuck something up... Ya I can understand your point but I have read a ton on both this forum and others as well as other books and articles and unless the info didn't register I don't remember seeing anything on this subject. So I have read up on the AR. Just to return the favor maybe you should get all the facts before you open your mouth and show everyone how smart you are by your lack of language skills. Thanks for the info guys, this site is great. |
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Figured as much after the factory rifle did it but its a little nerve racking when you don't realize this happens until you do it with a build. I was thinking what the hell did I do wrong and shooting a hole into mommas very new and nice bed would get me kicked out of said bed and into the dog house. Maybe it's time to read a little about your rifle before you fuck something up... Ya I can understand your point but I have read a ton on both this forum and others as well as other books and articles and unless the info didn't register I don't remember seeing anything on this subject. So I have read up on the AR. Just to return the favor maybe you should get all the facts before you open your mouth and show everyone how smart you are by your lack of language skills. Thanks for the info guys, this site is great. Muddy, sorry I came across a bit rough...Here is a great read to help you understand your AR. "The AR-15 Complete Owner's Guide" by Walt Kuleck..You will enjoy it... |
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Good evening Muddydogs, all.
I too read and purchased two very thorough and thoughtful books: "Workbench AR-15 Project: A Step-by-Step Guide to Building Your Own Legal AR-15 Without Paperwork by D.A. Hanks. Published September 2004; and "The M16/AR15 Rifle, 3rd. Ed. (A Shooter's and Collector's Guide.)" by Joe Poyer. Published June 1, 2007. Two great books that I purchased before my first build project (which turned out beautifully by the way). No where in those two books is anything said about slam-fires or the drifting firing pin making dimples on primers. Just like you, Muddydogs, I was just as surprised to see those dimples as well. And it's members and posters like tbougie1 who make newbies to AR building cringe at the thought of asking really pertinant and critical questions. It's poster like tbougie1 who makes this world a less safe and enjoyable place. From Maineyack I welcome you to the forum and the world of Black Rifle Building, which will turn into Black Rifle Building Disease. |
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Good evening Muddydogs, all. I too read and purchased two very thorough and thoughtful books: "Workbench AR-15 Project: A Step-by-Step Guide to Building Your Own Legal AR-15 Without Paperwork by D.A. Hanks. Published September 2004; and "The M16/AR15 Rifle, 3rd. Ed. (A Shooter's and Collector's Guide.)" by Joe Poyer. Published June 1, 2007. Two great books that I purchased before my first build project (which turned out beautifully by the way). No where in those two books is anything said about slam-fires or the drifting firing pin making dimples on primers. Just like you, Muddydogs, I was just as surprised to see those dimples as well. And it's members and posters like tbougie1 who make newbies to AR building cringe at the thought of asking really pertinant and critical questions. It's poster like tbougie1 who makes this world a less safe and enjoyable place. From Maineyack I welcome you to the forum and the world of Black Rifle Building, which will turn into Black Rifle Building Disease. Perhaps you should read all the posts before you insert your foot in mouth. I apologized for coming across as rough and suggested a book that would help educate the OP. We continue to see the same questions day in and day out from new posters. Some are legit and others, with a little bit of work by the poster would answer his own question. we aren't talking airsoft here but weapons that can kill the owner or someone else. I don't need be on a firing line with people who have no idea what they are doing. People ask if they should clean ther rifle before they shoot it...WTF,,,read the manuals and any other material that will make you a better and safer shooter..before you go to the range. I like others have had the luxury of shooting the ar since the late 60's and 70's. Our traiining was 1000's of dry fires and nomenclature training before we ever shot a live round. Unfortunately the public believes you slap a mag in your rifle and away you go. As I stated above, learn your rifle before you fuck something or someone up. EDIT also the OP stated he was worried about shooting a hole in 'Mamma's bed" Why does he have a rifle and live rounds together for a function check? Outside of a controlled range? This is a recipe for disaster..sorry I can't be more PC, so you get a warm fuzzy... but my ass is on the line as well as yours at the range... |
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Yep - wanna bet that the OP cycled live rounds through his gun at home & was not paying any attention at all as to where the gun was pointed while making all those "dimples" in the primers?
Now you know yet another reason why there are so many negligent discharges in the news (and far far more that do not make the news). |
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By some snap caps. First time I saw a primer dimpled I about SHIT myself, wondering where it had been pointed when I let the carrier slam home. Never again.
MANY years ago. A n00b to the AR. I'd venture to say most of us have done it at least once in the house, not realizing what we were doing. |
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I'm sure it's a myth that floating pins can "slam" fire. The mass of the pin is not enough to ignite any normal primer. Yeah, the term "Slamfire" was just made up for something that doesn't exist... 
I've personally witnessed an SKS slamfire. Scary as shit, but LUCKLY nobody hurt. The firing pin channel was dirty, and apparently had some grit in it or something that locked the pin in the forward pos. When home boy slammed the bolt home, she started rocking and rolling. It only fired off 5-6 rounds before the pin worked loose, but it was working its way around on the guy shooting it. Couple more rounds, and it would have probably worked its way out of his hands. Not good. Slamfire's no joke. While it's unlikely it would happen, there's always the chance that an out of spec part could cause the firing pin to stick forward on an AR as well. Especially on a brand-new un-fired home build. Get some snap caps, and don't put any ammo in it 'till you're ready for it to go bang. |
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I'm sure it's a myth that floating pins can "slam" fire. The mass of the pin is not enough to ignite any normal primer. It shouldn't happen, but lots of things that shouldn't happen do happen when rifles are dirty or things aren't to spec. Just do some searches. It happens. Why do you think the military specs a harder primer? I'm sure it's just CCI spinning out propaganda so it can sell more #41s. |
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Yep - wanna bet that the OP cycled live rounds through his gun at home & was not paying any attention at all as to where the gun was pointed while making all those "dimples" in the primers? Now you know yet another reason why there are so many negligent discharges in the news (and far far more that do not make the news). See another that assumes stuff. Yes I cycled live rounds through the gun at home, but I was paying attention to where the gun was pointed. It was pointed down and away from people and pets. Maybe not the smartest thing to do but I have to say when ever I load a weapon in the house weather it be a shotgun, rifle, or my everyday carry pistol I point it in the same spot which just happens to be at the bed, wood floor, dirt crawl space because if I ever have a problem there is nothing wrong with the slug getting slowed down by mattress and box spring first. So like I said I didn't have any idea about the slam fire deal with this weapon, I will get on the reloader and make a few dummy rounds. By the way I have been handling weapons for 30 + years without a ND or incident from the woods to the duck blind as well as my home and the streets. I am very thick skinned and can take it as well as you guys can dish it out but the guys that posted about people being scared to post for fear of getting insulted is very true. I have been on this forum everyday for a few months and have not ran across a post about slam fires. I would have done a search on it as well I did after I figured out the term. Kinda hard to search for something here when you don't know where to start. Sorry I bothered a few of you with my post. To the guys that helped with the info I thank you. |
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Yep - wanna bet that the OP cycled live rounds through his gun at home & was not paying any attention at all as to where the gun was pointed while making all those "dimples" in the primers? Now you know yet another reason why there are so many negligent discharges in the news (and far far more that do not make the news). See another that assumes stuff. Yes I cycled live rounds through the gun at home, but I was paying attention to where the gun was pointed. It was pointed down and away from people and pets. Maybe not the smartest thing to do but I have to say when ever I load a weapon in the house weather it be a shotgun, rifle, or my everyday carry pistol I point it in the same spot which just happens to be at the bed, wood floor, dirt crawl space because if I ever have a problem there is nothing wrong with the slug getting slowed down by mattress and box spring first. So like I said I didn't have any idea about the slam fire deal with this weapon, I will get on the reloader and make a few dummy rounds. By the way I have been handling weapons for 30 + years without a ND or incident from the woods to the duck blind as well as my home and the streets. I am very thick skinned and can take it as well as you guys can dish it out but the guys that posted about people being scared to post for fear of getting insulted is very true. I have been on this forum everyday for a few months and have not ran across a post about slam fires. I would have done a search on it as well I did after I figured out the term. Kinda hard to search for something here when you don't know where to start. Sorry I bothered a few of you with my post. To the guys that helped with the info I thank you. Good thing you've got thick skin. You need it 'round here. I've canceled previous accounts in years past, and then created another account last year. Stopped posting for a while after that as well. Things seem to be a bit better these days, but there's always going to be the few bad apples. Don't let it bother you too much. Just learn what you can, and let the bullshit roll off. It can be healthy to take a hiatus from time to time, if things start getting to you. |
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Slamfire is Real!!!!!!!!!!!
In my opion it became really known because Folks got a SKS packed in cosmo and never cleaned it properly. The early internet messed up with bad info. My first experience was in the early 80's.in my early teens I was shooting my dad's llama 45 when his buddy asked if I would like to try his SKS SURE! The old man looked over as I was pulling the handle back and said "John Doo" but it was to late 5 into the ground 
Spooked the crap out of me!!!!!! He explained to me later that the guy has no clue on how to clean a gun and this person thought is was cool that it could do that
coworker or not he will not be shooting with us again!!!!! A Black eye was also involved 
Dad and his buddys were buying them for $20 each but that ended after that jerk would not clean his gun!!!!!!!!!!!! There was no more group buys after that It really is a shame So is slamfire real? Yes, Just clean your bolt and the will be no probs |
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Yep - wanna bet that the OP cycled live rounds through his gun at home & was not paying any attention at all as to where the gun was pointed while making all those "dimples" in the primers? Now you know yet another reason why there are so many negligent discharges in the news (and far far more that do not make the news). Sorry I bothered a few of you with my post. To the guys that helped with the info I thank you. No need to apologize; actually I need to thank you for posting this & being honest about it. We have a common enemy - that is, common to everyone who owns a gun. The enemy is: the gun "accident." It kills/injures innocent people. It often makes it into the press. The press uses gun accidents to make every gun owner look bad in the eyes of non-gun owning voters - and we ALL lose from that. My issue is this: most of the accidents are easily preventable by just following simple rules every gun owner should know & follow. That being said, do I sometimes load or unload my carry pistol at home? Yes I do - though I point it IN TO the gunsafe while doing it because I know that is where the bullet will end up IF the gun ever goes off while loading. Sure, such a ND might take out a few rifles. But better that than one of our neighbors/family member. |
| Im not saying a floating firing pin CAN'T cause a slam fire....but I have tried to make one happen and couldn't, I used numerous primers from Fed, Win, CCI and Wolf. Tested the same rounds 10 times, loading into mag, racking the bolt back and letting it slam home, never once could I get one to fire by the inertia of the floating firing pin alone....I also tried a case primed with a CCI small pistol primer, instead of a rifle primer (No powder just empty case set in the chamber and let the bolt drop on it.....I was unable to even ignite that primer. Am I saying it can't happen....NO, you should ALWAYS be safe when handling firearms, muzzle awareness is the most important rule....However, I was simply unable to recreate a slam fire from a floating firing pin....I suspect most slamfires are due to high primers or a somehow faulty firearm....I suppose enough carbon build up around the firing pin channel could cause a very unsafe situation. |
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