Direct impingement or gas piston?

Discussion in 'AR-15 Discussion' started by rugerry, Aug 28, 2012.

  1. rugerry

    rugerry New Member

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    So I'm stuck in the cross roads and want peoples ideas and opinions. What is better, a gas piston setup or direct impingement? I do a lot of range shooting and tactical lane shooting, but want something that I can jump out of the water with without it taking my face off. What do you guys think and what are thoughts?
     
  2. tacticalfun

    tacticalfun Active Member

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    I have both. My piston is cleaner....but i trust my life to my dgi's

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  3. mountainman13

    mountainman13 New Member

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    Under those conditions..piston.
     
  4. rugerry

    rugerry New Member

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    With you gas piston, I know they are cleaner, but other than that what are the upsides to them? I don't mind cleaning my weapon. ( currently infantry in the US ARMY) I read that with the gas piston, you don't have to drain the barrel if coming out of water? Any truth to this?
     
  5. rugerry

    rugerry New Member

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    What makes you not trust ur life to ur piston?
     
  6. fetep

    fetep New Member

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    Buy a DI, I did all the research, was buying a CQB MRP piston,I had decided the piston is what I needed, I ended up with the DI, why you ask? It just felt better, it does everything I have ever asked it to do, and I assure you it's waterproof.

    Fetep
     
  7. mountainman13

    mountainman13 New Member

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    I can tell you training with di includes a yank on the charging handle to break the seal so that the gun doesn't go kaboom.
     
  8. JonM

    JonM Moderator

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    Nope. Still gotta break the seal and drain the water.

    DI has fewer parts to break
     
  9. Quentin

    Quentin New Member

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    That's typical piston BS. Common sense tells you that you'd drain water from a barrel no matter what the cycling action. No doubt the gas tube is an extra issue but it drains too. Let's face it, any weapon that gets submerged needs a little attention and inspection before firing unless you have to get off a shot now.
     
  10. Jpyle

    Jpyle New Member

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    ^^^ what he said...water doesn't know or care what kind of gas system you have and will fill the barrel if the gun is submerged.
     
  11. fsted2a

    fsted2a Active Member

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    There are a TINY percentage of the piston AR's that you can rise out of the water without draining the gun and take a shot with minimal risk of a catastrophic failure, but they can all go kaboom in your face. If you are going to play seal wanna-be like that, get some serious ballistic face protection. My piston is really reliable, but that is much further than I want to risk. HK has a few youtube vids that demonstrate their guns doing that, but how many failures did they go through to get that shot? Yeah, I know a seal with a HK 416 got Bin Ladin, yada, yada. And I used to be one of the biggest champions of the AR piston http://www.firearmstalk.com/forums/f20/ar-15-cycling-operation-discussion-35134/ but I have 2 DI's to my one piston. All of my guns will shoot any brand of ammo. The piston is a little more reliable and a little less time to clean. Just not enough to justify the extra cash I had to shell out to buy the setup. I found out through trial and error that the DI system didn't take as much time to clean as my drill sergeants had preached, and a little oil can go a long way. I put together my guns with quality parts, not super expensive, just not bottom of the barrel, and they serve me just fine.
     
    Last edited: Aug 29, 2012
  12. rugerry

    rugerry New Member

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    Well looks like I'll go with my original thoughts. Spikes chrome vanadium bcg and an adjustable gas block