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Thread: Piston or Gas?

  1. #71
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    Excellent post Dinger, makes a whole lot of sense to me.

  2. #72
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    Thanks VA Dinger for your insight. That is why I posted the link for this thread to SMGLee testing and evaluating an HK and LMT rifles. I have one of the LMT Piston rifles and am extremely pleased so far. I look forward to more people testing and shooting the LMT Piston. I would like to hear in detail from SMGLee about how the rifle did in the weekend course.

    Are there any others here that have the LMT Piston that are shooting it alot? VA Dinger, have you had the opportunity to run the LMT Piston rifle much? Have you attended classes where others in your class used this platform?

    I guess one major selling point in using the LMT MRP CQB platform is that it is extremely quick and easy to change back and forth from Piston to DI whenever one wants. All anyone needs is a barrel and BCG and you are back and forth, whichever you want or like.

    I think LMT really did their homework (engineering and testing) before bringing out this rifle. I guess only time will tell, but from what I see and have read from people that actually have one of these, it is a great platform!!!

    BTW, here is the link again to SMGLee shooting and running both rifles. I think it is really interesting that he noted the recoil impulse of the LMT and compared it to a DI rifle. From what I gather, most of the piston ARs out there have a rather sharp recoil. I have shot mine side by side with my neighbors S&W M&P 15 and I have to say, that I actually think that my LMT is softer recoiling, but that might be due to the solid upper.......don't know for sure, but I really like it!!!

    https://www.m4carbine.net/showthread.php?t=26421

    Thanks again VA Dinger. Again, I'm really interested in range reports, extended shooting sessions, or classes taken by people that have the LMT Piston!!!
    God Bless and good shootin'!!!

  3. #73
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    Thank you Dinger for clear and to the point statement.

    Has I stated before jwinch2 I tried to APOLOGIZE to you. I did not use profanity In my statement to you. I guess you use profanity in your professional discussions.
    I am sorry that you have gotten so upset in this discussion. Can I ask you to please re-vector your anger from me.


    CYMAX has stated he has the proper knowledge for this discussion I will take his analysis on this subject from now on.

  4. #74
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    well looks like i have some modeling to do :P
    it will keep me busy on those cloudy days and let evening lolool

  5. #75
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    Quote Originally Posted by Thomas M-4 View Post
    I stated before jwinch2 I tried to APOLOGIZE to you.
    Why don't you try apologizing to all the people who you insulted and talked down to rather than apologizing to me?

  6. #76
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    Quote Originally Posted by VA_Dinger View Post

    As already stated buy a high quality AR from Colt, Daniel Dense, Charles Daly, Noveske, or LMT and 99% of us will be perfectly happy.

    Very true. While there are certainly deals to be found and I would encourage anyone looking for a weapon to due their research first, I firmly believe that 95% of the time you get exactly what you paid for.

  7. #77
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    if you even have to ask this question, then the answer is: Direct Impingement.


    out of my 7 ARs, all of them are direct gas. i could buy a piston upper if i wanted, however, for the vast majority of users (myself included) piston ARs offer no significant advantages to outweigh the draw-backs that come with piston ARs: like carrier tilt, weight, cost, difficult to obtain non-spec parts, change in recoil impulse, sheared or bent op-rods, etc. adding extra springs and other parts is rarely a good thing.
    Last edited by Parabellum9x19mm; 04-26-09 at 16:06.
    TUEBOR

  8. #78
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    Quote Originally Posted by Cohibra45 View Post
    Thanks VA Dinger for your insight. That is why I posted the link for this thread to SMGLee testing and evaluating an HK and LMT rifles. I have one of the LMT Piston rifles and am extremely pleased so far. I look forward to more people testing and shooting the LMT Piston. I would like to hear in detail from SMGLee about how the rifle did in the weekend course.

    Are there any others here that have the LMT Piston that are shooting it alot? VA Dinger, have you had the opportunity to run the LMT Piston rifle much? Have you attended classes where others in your class used this platform?

    I guess one major selling point in using the LMT MRP CQB platform is that it is extremely quick and easy to change back and forth from Piston to DI whenever one wants. All anyone needs is a barrel and BCG and you are back and forth, whichever you want or like.

    I think LMT really did their homework (engineering and testing) before bringing out this rifle. I guess only time will tell, but from what I see and have read from people that actually have one of these, it is a great platform!!!

    BTW, here is the link again to SMGLee shooting and running both rifles. I think it is really interesting that he noted the recoil impulse of the LMT and compared it to a DI rifle. From what I gather, most of the piston ARs out there have a rather sharp recoil. I have shot mine side by side with my neighbors S&W M&P 15 and I have to say, that I actually think that my LMT is softer recoiling, but that might be due to the solid upper.......don't know for sure, but I really like it!!!

    https://www.m4carbine.net/showthread.php?t=26421

    Thanks again VA Dinger. Again, I'm really interested in range reports, extended shooting sessions, or classes taken by people that have the LMT Piston!!!
    Although I am big LMT fan I have zero experience with there piston gun. I just got to see my 1st example (SMGLee's) at a recent class and it seemed to run well. I do think it's way to early to declare it ready to go for the long haul though. Let's see how relatively large numbers of them perform over time and escalating round counts.

    IMO: I pay no attention to "Recoil" comments. To me, it's all what you are used to shooting. I shoot a 416 most of them time, so when I shoot a standard direct gas AR it feels very different. I can actually feel the buffer spring and buffer cycling. It's not that it's "Bad" or "good", it's just different.
    Last edited by VA_Dinger; 04-26-09 at 18:41.
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  9. #79
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    Direct Gas Impingement is battle tested, tried and true, although I do like some of the innovative piston designs. That said, the military has not officially adopted any variation of the latter system as spec.
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  10. #80
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    I shoot suppressed a LOT. My PWS piston upper is by far and above my favorite for suppressed fire.

    If I run 100rnds through a DI upper with suppressor on... that thing is FILTHY afterward. Takes significant effort to clean it good.

    100rnds through my piston upper with suppressor on is a breeze to clean. Sure, its dirty, but I'd say 1/10th as dirty as the DI. For that reason alone, the piston systems get the nod from me.

    If I was not shooting suppressed, then there would be almost no motivation for me to have one.

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