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Thread: Advantages/Disadvantages of the Gas-Piston Operated Carbine

  1. #21
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    Quote Originally Posted by Gunreference1 View Post
    This is what I have heard about the fate of the SCAR.

    http://kitup.military.com/2010/06/so...k-16-scar.html

    Steve
    My bad, I should have posted a quote. So, according to this person on Defense Review, they plan to go ahead with the Mk-17 with an adaptor to switch over to 5.56? Well, good luck with it, soldiers.

  2. #22
    Team GunsNet Silver 07/2012 NewbieAKguy's Avatar

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    Wow! Even cheaper than Stag or CMMG's piston AR!!! http://www.gandrtactical.com/cgi-bin...ion&key=811022

    I'm even tempted for that price!

    Update: S&W's MSRP for this is $1531.00!!
    Last edited by NewbieAKguy; 07-26-2010 at 02:40 AM.
    "The God who gave us life, gave us liberty at the same time; the hand of force may destroy, but cannot disjoin them. ... Can the liberties of a nation be thought secure when we have removed their only firm basis, a conviction in the minds of the people that these liberties are the gift of God? That they are not to be violated but with His wrath? Indeed I tremble for my country when I reflect that God is just: that his justice cannot sleep for ever."--Thomas Jefferson

  3. #23
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    Good God, for that price something has to be off. But after that 9mm package, we'll see.

  4. #24
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    Quote Originally Posted by Moebrown20 View Post
    Looks like I have to make a call to AA soon.
    380 bucks seems close to these pistons price range.
    Been thinking about putting a Mega MTS together using the AA piston designed for the Mega. Rainier has a good stock of the stuff.

    http://www.megamachineshop.com/armscatalog.php

    Anybody have experience or comments?

  5. #25
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    Well, my AA piston arrived yesterday.
    After a quick look at the install video


    ,

    I will attempt to do it tonight after I pick up another punch set.
    I won't be able to test it until August tho.
    The 2nd Amendment : Washington didn't use his right to free speech to defeat the British, he shot them.

  6. #26
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    Good luck, Moe. Just make sure to give us a range report.

  7. #27
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    The install was good. It took me 10 minutes longer than the video. I lost a punch in the process. I also installed a roller cam pin from www.pof-usa.com and a Walther PS 22. This weekend is done for and it just started. I need some range time.
    The 2nd Amendment : Washington didn't use his right to free speech to defeat the British, he shot them.

  8. #28
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    Quote Originally Posted by Moebrown20 View Post
    The install was good. It took me 10 minutes longer than the video. I lost a punch in the process. I also installed a roller cam pin from www.pof-usa.com and a Walther PS 22. This weekend is done for and it just started. I need some range time.
    Moe, I have no knowledge/experience with roller cam pin. Will ya tell me what you know?

  9. #29
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    Quote Originally Posted by Paladin View Post
    Moe, I have no knowledge/experience with roller cam pin. Will ya tell me what you know?
    It would be easier to show.
    Have you brought a new upper & gave it an inspection plus a light coat of oil.
    Then took it to the range for a 100+ rounds of good shooting.
    When you got home and started cleaning, you notice grooves & wear (called the dreaded cam pin "groove" ).

    Well a roller pin was stated to fix the problem. Now most of the AR's I've shot were used and had some wear in them already. The drag associated with the standard rectangular pin only bother a few. http://www.youtube.com/watch?v=6JmIQXkoog8
    The 2nd Amendment : Washington didn't use his right to free speech to defeat the British, he shot them.

  10. #30
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    Quote Originally Posted by Moebrown20 View Post
    It would be easier to show...http://www.youtube.com/watch?v=6JmIQXkoog8
    Thanks for the link. I am starting a build with Mega's MTS Mono upper and the AA piston system designed just for the MTS. I am guessing that the POF cam pin does not interfere with the unique AA key/rod, ja?

  11. #31
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    Quote Originally Posted by Paladin View Post
    Thanks for the link. I am starting a build with Mega's MTS Mono upper and the AA piston system designed just for the MTS. I am guessing that the POF cam pin does not interfere with the unique AA key/rod, ja?

    No, only in the di system but 10 seconds with a dremel would fix that problem.




    The modified bolt carrier has plenty of room.

    The 2nd Amendment : Washington didn't use his right to free speech to defeat the British, he shot them.

  12. #32
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    Quote Originally Posted by Moebrown20 View Post
    No, only in the di system but 10 seconds with a dremel would fix that problem...The modified bolt carrier has plenty of room.
    Thanks buddy. The pics make it very clear...

  13. #33
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    Trigger time is the reward of hard work. Also, pics of the rifle would be nice, if you're able.

  14. #34
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    Quote Originally Posted by RCS View Post
    Trigger time is the reward of hard work. Also, pics of the rifle would be nice, if you're able.
    I'll have a few up tomorrow.
    The 2nd Amendment : Washington didn't use his right to free speech to defeat the British, he shot them.

  15. #35
    swampdragon
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    Quote Originally Posted by Moebrown20 View Post
    No, only in the di system but 10 seconds with a dremel would fix that problem.




    The modified bolt carrier has plenty of room.

    That bolt carrier looks similar to Ruger's.
    I'm gonna have to go back and check out some of these links.

    Moe....I agree with everybody else.
    Some pics and range report would be awesome.

  16. #36
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    The 2nd Amendment : Washington didn't use his right to free speech to defeat the British, he shot them.

  17. #37
    swampdragon
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    Where does the excess gas bleed out?
    I seem to have missed that part.
    Does it come out around the gas block or under the hand-guards or what?

  18. #38
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    You have a great-looking rifle, Moe. The only question I have, aside from SD's, is the performance and I'm set. You pretty much beta-tested this whole ordeal for me. I really appreciate it!

  19. #39
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    Quote Originally Posted by swampdragon View Post
    Where does the excess gas bleed out?
    I seem to have missed that part.
    Does it come out around the gas block or under the hand-guards or what?
    Swampy, at about 36 seconds on the animation, it answers your question.


  20. #40
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    Quote Originally Posted by swampdragon View Post
    Does it come out around the gas block or under the hand-guards or what?
    Yeah, the back of the gas block and the upper front handguard.
    It's semi adjustable: Normal, suppressed and off.
    The 2nd Amendment : Washington didn't use his right to free speech to defeat the British, he shot them.

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