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  • protohyp
    Vendor/Retailer
    • Sep 2014
    • 3349

    Out of Battery Detonation....

    ....just doesnt happen in an AR

    So I'm leafing through editing some of my videos and I came upon this to dispel the rumors that an AR 15 can have an OOB detonation.

    It just wasn't designed this way. You can dispute it all you want but heres a little video for you



    now if you toy around with your BCG and do some crazy stuff to it then I can't speak to that but this is about 15000 rounds uncleaned for a while rifle which is why my BCG was getting hung up.
    Last edited by protohyp; 06-02-2018, 11:02 AM.
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  • #2
    MarikinaMan
    Veteran Member
    • Nov 2015
    • 4864

    Comment

    • #3
      protohyp
      Vendor/Retailer
      • Sep 2014
      • 3349

      Originally posted by MarikinaMan
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      3 kits at 200.00
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      MANTIS BLACKBEARD X AFFILIATE LINK https://mantisx.idevaffiliate.com/id...id=528&url=172

      DRYFIREMAG AFFILIATE LINK https://www.dryfiremag.com/?ref=Protohyp

      Comment

      • #4
        MarikinaMan
        Veteran Member
        • Nov 2015
        • 4864

        Originally posted by protohyp
        That’s most likely a squib. You see he’s pounding the forward assist each time he malfunctions most likely pushing the squib forward until it goes into battery.

        If it blows up upon loading the next round that’s most likely a hot load or a failing case but the OOB never has a chance for the pin to hit the primer


        Sent from my iPhone using Tapatalk
        As far as I know, the bolt can close but possibly not lock. The carrier has to collapse into the bolt so that the cam can turn it. In the previous condition, the hammer can still strike the pin and cause an OOB. I am not sure if the timing of the hole the hammer goes through on the carrier prevents this.

        Last edited by MarikinaMan; 06-02-2018, 11:42 AM.

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        • #5
          protohyp
          Vendor/Retailer
          • Sep 2014
          • 3349

          Originally posted by MarikinaMan
          As far as I know, the bolt can close but possibly not lock. The carrier has to collapse into the bolt so that the cam can turn it. In the previous condition, the hammer can still strike the pin and cause an OOB. Cleaning is advisable


          you know we all get lazy cleaning.

          My thought is the minute amount that the pin has to travel in the window that it can effectively strike the primer doesnt really put the casing out of battery.
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          DRYFIREMAG AFFILIATE LINK https://www.dryfiremag.com/?ref=Protohyp

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          • #6
            RickD427
            CGN/CGSSA Contributor - Lifetime
            CGN Contributor - Lifetime
            • Jan 2007
            • 9259

            Originally posted by protohyp
            ....just doesnt happen in an AR

            So I'm leafing through editing some of my videos and I came upon this to dispel the rumors that an AR 15 can have an OOB detonation.

            It just wasn't designed this way. You can dispute it all you want but heres a little video for you



            now if you toy around with your BCG and do some crazy stuff to it then I can't speak to that but this is about 15000 rounds uncleaned for a while rifle which is why my BCG was getting hung up.
            Anything that is made up of mechanical parts can have a malfunction. The video that you posted doesn't change that fact. For that matter, the naval architects that designed the Titanic made her "unsinkable." Same fallacy involved there.

            I had to take action on an administrative investigation where a M-16 weapon had an "out of battery" detonation on a range at Camp Pendleton.

            It can, and has, happened. Even if Dr. Stoner did not intend for it to in the weapon's design.
            Last edited by RickD427; 06-02-2018, 12:19 PM.
            If you build a man a fire, you'll keep him warm for the evening. If you set a man on fire, you'll keep him warm for the rest of his life.

            Comment

            • #7
              protohyp
              Vendor/Retailer
              • Sep 2014
              • 3349

              Originally posted by RickD427
              Anything that is made up of mechanical parts can have a malfunction. The video that you posted doesn't change that fact. For that matter, the naval architects that designed the Titanic made her "unsinkable." Same fallacy involved there.

              I had to take action on an administrative investigation where a M-16 weapon had an "out of battery" detonation on a range at Camp Pendleton.

              It can, and has, happened. Even if Dr. Stoner did not intend for it to in the weapon's design.
              So was it conclusive that it was an OOB? It would be hard for me to believe that it could be case head separation on once fired brass.

              I guess again I should reiterate that if a BCG hasn't been modified or parts are missing it shouldn't happen. On normally operating even dirty rifles shouldn't happen. You make a good case that anything can happen but to me it would have to be extraordinary for it to happen. Just my opinion.
              MESSAGE ME FOR ARMAGLOCK COUPON CODES!!!!
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              DRYFIREMAG AFFILIATE LINK https://www.dryfiremag.com/?ref=Protohyp

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              • #8
                RickD427
                CGN/CGSSA Contributor - Lifetime
                CGN Contributor - Lifetime
                • Jan 2007
                • 9259

                Originally posted by protohyp
                So was it conclusive that it was an OOB? It would be hard for me to believe that it could be case head separation on once fired brass.

                I guess again I should reiterate that if a BCG hasn't been modified or parts are missing it shouldn't happen. On normally operating even dirty rifles shouldn't happen. You make a good case that anything can happen but to me it would have to be extraordinary for it to happen. Just my opinion.
                Yes, it was clearly an OOB discharge. The weapon involved was autopsied by a couple of expert examiners.

                You're right it "should" not have happened, but it did.
                If you build a man a fire, you'll keep him warm for the evening. If you set a man on fire, you'll keep him warm for the rest of his life.

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                • #9
                  Blade Gunner
                  Veteran Member
                  • Mar 2013
                  • 4422

                  Was getting that one thirty cent round to fire so important. Multiple attempts using the forward assists and charging handle should have given him a clue something was amiss.


                  Sent from my iPhone using Tapatalk
                  If you find yourself in a fair fight, you're doing it all wrong.

                  Comment

                  • #10
                    Carsgunsandchics
                    Veteran Member
                    • Mar 2009
                    • 3537

                    You can get a out of battery detonation by having a high primer. Or even a broken firing pin or debris in the bolt holding the firing pin.
                    Originally posted by fighterpilot562
                    I am more of a sucker than a blower...

                    Comment

                    • #11
                      dwinters14
                      Senior Member
                      • Oct 2015
                      • 729

                      Anything mechanical can and will have failures where they shouldn't. But on the whole if the ar-15 was designed to prevent this from happening and firearms manufacturers are making their weapons to that spec, and the end user is responsible in taking care of the firearm the chances of an OOB firing should be slim.

                      Much like saying you can shoot yourself with a ricochet and many other less than likely, but possible scenarios.

                      My question is what is the relevance of this? Is it going back to the discussion about the halves being separated?
                      My rights aren't yours to vote away.

                      Comment

                      • #12
                        protohyp
                        Vendor/Retailer
                        • Sep 2014
                        • 3349

                        Originally posted by dwinters14
                        Anything mechanical can and will have failures where they shouldn't. But on the whole if the ar-15 was designed to prevent this from happening and firearms manufacturers are making their weapons to that spec, and the end user is responsible in taking care of the firearm the chances of an OOB firing should be slim.

                        Much like saying you can shoot yourself with a ricochet and many other less than likely, but possible scenarios.

                        My question is what is the relevance of this? Is it going back to the discussion about the halves being separated?
                        MESSAGE ME FOR ARMAGLOCK COUPON CODES!!!!
                        3 kits at 200.00
                        4 kits at 250.00


                        MANTIS BLACKBEARD X AFFILIATE LINK https://mantisx.idevaffiliate.com/id...id=528&url=172

                        DRYFIREMAG AFFILIATE LINK https://www.dryfiremag.com/?ref=Protohyp

                        Comment

                        • #13
                          ar15barrels
                          I need a LIFE!!
                          • Jan 2006
                          • 56967

                          Originally posted by MarikinaMan
                          I am not sure if the timing of the hole the hammer goes through on the carrier prevents this.
                          The hole in the carrier stops the firing pin from reaching through the boltface if the carrier is back from the barrel extension by more than the length of the firing pin protrusion.
                          Firing pin protrusion is under 1/16".
                          The carrier has to move rearward more than 1/8" before the cam pin is engaged to BEGIN unlocking the bolt lugs from the extension lugs.
                          The full unlocking does not occur until more like 3/8" of bolt travel.

                          It's not possible for the firing pin to protrude beyond the bolt face and strike a primer of a chambered cartridge when the lugs are not FULLY locked into the barrel extension.
                          Randall Rausch

                          AR work: www.ar15barrels.com
                          Bolt actions: www.700barrels.com
                          Foreign Semi Autos: www.akbarrels.com
                          Barrel, sight and trigger work on most pistols and shotguns.
                          Most work performed while-you-wait.

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                          • #14
                            colt11
                            Senior Member
                            • May 2012
                            • 697

                            I had a kaboom in my 9mm AR using Blazer Aluminum case ammo. I believe the problem may have been from a 9mm lighweight hammer the original builder installed that was being thrown back so fast it did not catch and would follow the bolt back. I installed a heavier hammer and never had another problem. Fortunately the 9mm is a lower pressure round.

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                            • #15
                              MarikinaMan
                              Veteran Member
                              • Nov 2015
                              • 4864

                              Originally posted by colt11
                              I had a kaboom in my 9mm AR using Blazer Aluminum case ammo. I believe the problem may have been from a 9mm lighweight hammer the original builder installed that was being thrown back so fast it did not catch and would follow the bolt back. I installed a heavier hammer and never had another problem. Fortunately the 9mm is a lower pressure round.
                              I don’t get the part where this was a kaboom? Ar9s are blow back. A stuck firing pin would just turn it to full auto. A hammer with no disconnect would also go on full auto. Can u describe what happened in more detail?

                              Below is another CLICK and NO BANG kaboom. New ammo experienced head separation. JP supposedly said they think it was overcharged factory ammo. I’m just thinking that it’s too coincidental that the detonation happened after the click.

                              Last edited by MarikinaMan; 06-03-2018, 6:34 AM.

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