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AR15, Piston vs Direct Impingement: An observation.

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  • bigdawg86
    Veteran Member
    • Mar 2012
    • 3554

    AR15, Piston vs Direct Impingement: An observation.

    So I took a 2 day carbine course this weekend. It was an absolute blast, but the weather was insane. Freezing cold, non stop heavy rain, occasional hurricane force winds.

    There were about 30 people in the class. Weapons systems range from high end to low end. Most people were average joes. There were a few guys in full kit, with the most insane **** hanging off the front of their rifles.

    The first day weather wasn't horrible, saw a few people problems with some rifles but overall nothing major.

    Day two the weather was insane. Freezing cold, non stop heavy rain, occasional hurricane force winds. Every rifle was sopping wet and filty. There were about 6-8 guns that couldn't run more than a few rounds without an jam, FTF, FTE, etc. The range masters changed a few gas blocks and rebuilt a few BCG's. They still had problems and had to oil these guns every few rounds it seems. These were all DI guns. Most notably, they were the guns of the mall ninja's... in hind site all there gear was probably airsoft haha.

    It was just an odd occurrence to me, and a real eye opener for the others that couldn't get their guns to work. So why only problems with the DI guns?

    All my friends including myself had piston guns and they ran perfectly.
  • #2
    tonyxcom
    Calguns Addict
    • Aug 2011
    • 6397

    Ok, ill take the troll bait, only to point out the troll bait.

    Has nothing to do with piston vs DI. Sounds more like low vs high quality.

    You said their were 30 guys in the class and 6-8 DI guns having problems. Were you there with 22 friends with piston guns? Or were there some DI guns that didn't have any problems either?

    This is why I laugh when people claim reliability after "ran 300 rounds at the range an no problems".
    Last edited by tonyxcom; 02-01-2016, 4:26 PM.

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    • #3
      bigdawg86
      Veteran Member
      • Mar 2012
      • 3554

      Originally posted by tonyxcom
      Has nothing to do with piston vs DI. Sounds more like low vs high quality.
      Serious question to a initially a mildly troll thread...

      If it's milspec then why such a difference. This I always wonder.

      Comment

      • #4
        C.W.M.V.
        Banned
        • Feb 2010
        • 4647

        Because milspec is spec of the lowest bidder.
        Much of the milspec stuff that is issued is garbage.
        Further, I'm willing to bet your average grunt puts more maintenance into his rifle than any mall ninja.
        I have to grudgingly admit that as much as I dislike the AR platform I never in 3 years in Iraq leading grunts had a malfunction, nor did my soldiers, as long as the weapons were properly(constantly) cleaned and cared for. I did see an AR rust shut, but that was not my soldier and it was stateside so I could laugh about it lol.

        Comment

        • #5
          billped
          Veteran Member
          • Oct 2009
          • 2504

          "Milspec" doesn't mean "identical".
          Bill

          Comment

          • #6
            tonyxcom
            Calguns Addict
            • Aug 2011
            • 6397

            There is no such thing as "mil spec".

            I am guessing you don't have any information about the manufacturer of these guns or the parts they were built from and who built them. You also probably don't know what kind of ammo each of these guns where using. And you also probably don't even know what the problems actually were for each of these guns. How do you even know they were "mil spec" anyway?

            I find it highly suspect that they would be changing a gas block at any point during the class. But assuming they were, thats a pretty good indication that the guns in question were junk.

            Comment

            • #7
              C.W.M.V.
              Banned
              • Feb 2010
              • 4647

              Originally posted by billped
              "Milspec" doesn't mean "identical".
              QFT.
              And changing gas blocks? Why on earth...?
              Also suspect that bolts were being rebuilt. Bad ammo or cheap parts.

              Comment

              • #8
                tonyxcom
                Calguns Addict
                • Aug 2011
                • 6397

                We are being trolled by a piston fanboy.

                Comment

                • #9
                  saki302
                  Calguns Addict
                  • Oct 2005
                  • 7187

                  Bring out a KAC DI gun or an LMT / Daniel Defense / Larue DI gun and see how they perform at the range. I bet they outlast the piston guns.

                  -Dave

                  Comment

                  • #10
                    DDM4556
                    CGN/CGSSA Contributor
                    CGN Contributor
                    • Jun 2014
                    • 2601

                    Another piston fanboy... which is fine, but no better than any good DI rifle.
                    iTrader: 52 transactions, 100% positive.

                    Comment

                    • #11
                      C.W.M.V.
                      Banned
                      • Feb 2010
                      • 4647

                      Originally posted by saki302
                      Bring out a KAC DI gun or an LMT / Daniel Defense / Larue DI gun and see how they perform at the range. I bet they outlast the piston guns.

                      -Dave
                      Or even a home build from quality parts.

                      Comment

                      • #12
                        bigdawg86
                        Veteran Member
                        • Mar 2012
                        • 3554

                        Originally posted by DDM4556
                        Another piston fanboy... which is fine, but no better than any good DI rifle.
                        Not a fan boy... Just happened to over think my first build in a subject I over researched, and subsequently built a piston rifle.

                        My 3 subsequent builds are DI but are honestly more range toys than anything , but my Adam's Arms has not disappointed me.

                        Sent from my SM-G900V using Tapatalk

                        Comment

                        • #13
                          FeuerFrei
                          Calguns Addict
                          • Aug 2008
                          • 7455

                          Good one OP!
                          Another DI vs Piston AR thread Always entertaining.

                          Reminds me of...

                          Comment

                          • #14
                            GOLDEN GUN
                            Banned
                            • Dec 2012
                            • 2326

                            Enough information here for me never to buy a piston setup

                            Comment

                            • #15
                              Oceanbob
                              I need a LIFE!!
                              • Jun 2010
                              • 12720

                              Originally posted by GOLDEN GUN
                              Enough information here for me never to buy a piston setup

                              http://www.thefirearmblog.com/blog/2...-rental-range/
                              Wow. That was a great article and write up.

                              Thanks....
                              May the Bridges I burn light the way.

                              Life Is Not About Waiting For The Storm To Pass - Its About Learning To Dance In The Rain.

                              Fewer people are killed with all rifles each year (323 in 2011) than with shotguns (356), hammers and clubs (496), and hands and feet (728).

                              Comment

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