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Thread: DI or Piston for SBR 10.5" barrel?

  1. #21
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    I started off with DI SBRs. The first was a 10.5" LMT Mk18 and followed that with a BCM 11.5".

    I replaced those with piston uppers (all LWRCs), sold the DI uppers, and have not looked back.

    The only reason I stopped using the DI uppers is because I am too lazy to clean y guns with any regularity. So after I started shooting the Mk18 with a suppressor, I had a failure to fire. Turns out I had so much carbon build up on the firing pin that it was not making enough of a dent of the primer.

    I have not had any such issue since I bought my first piston upper (10.5" LWRCI M6A1) more than 14,000-rounds ago. I now have 3 SBRs (10.5", 12.7" and 8.5" PSD). YMMV.
    Last edited by CarlosDJackal; 04-14-12 at 14:42.
    We must not believe the Evil One when he tells us that there is nothing we can do in the face of violence, injustice and sin. - Pope Francis I

  2. #22
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    friends don't let friends buy piston ARs.

    IMO if you're going to run the gun unsuppressed with any regularity, the Switchblock is worth having. If you're going to keep it suppressed 90%+ of the time, just cut down a 16" barrel to get the smaller gas port.

  3. #23
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    I have the LMT MRP CQB's in 10.5DI, 12.5 piston and 16in DI. I use the 10.5 suppressed with a thunderbeast 30 ba and unsuppressed and have fired wolf, brown bear and my reloads through it without problems or adjustments of any kind. It shoots very soft. So much so that I havn't even worried about setting up my piston to use the suppressor yet. I like the 12.5 piston very much but with the way the 10.5 shoots, I don't know that I will set it up for suppressed fire.
    Last edited by rundm; 04-15-12 at 23:05.

  4. #24
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    All great points and ideas, little bias against pistons though

    My two cents, if your state side and shoot for fun DI is the way to go. If your in a hostile less-than-urbanized area then pistons are your way to go. I've used the M16 and M4, its lighter and dependable when its properly maintained. Now I personally use a HK416 10.4 and it is heavier in weight and recoil but its a lot easier maintenance and looks f*#@# awesome.

    Besides the whole DI vs piston argument is a "Dead end Argument," go with whatever you feel best with. For that guy or guys who want to argue with what I said, lets first argue about which is better, the AK or M16? Or how about Pro-life or Pro-choice?

  5. #25
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    Quote Originally Posted by justlikeanyoneelse View Post
    All great points and ideas, little bias against pistons though

    My two cents, if your state side and shoot for fun DI is the way to go. If your in a hostile less-than-urbanized area then pistons are your way to go. I've used the M16 and M4, its lighter and dependable when its properly maintained. Now I personally use a HK416 10.4 and it is heavier in weight and recoil but its a lot easier maintenance and looks f*#@# awesome.

    Besides the whole DI vs piston argument is a "Dead end Argument," go with whatever you feel best with. For that guy or guys who want to argue with what I said, lets first argue about which is better, the AK or M16? Or how about Pro-life or Pro-choice?
    I'll take an M16 over an AK every day of the week and then on the weekend.

    I cant say I have ever been in the military but I have played with my MK18 clone in the desert where it ended up with a ton of sand in it by the end of the day and never had an issue. I made sure to keep it lubed though.
    Last edited by sinlessorrow; 05-04-12 at 20:59.

  6. #26
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    Same here, M16 anyday.

    The MK18 is the whole reason I bought a 10.4, there's something about an sbr that just makes you feel great.

  7. #27
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    Quote Originally Posted by justlikeanyoneelse View Post
    Same here, M16 anyday.

    The MK18 is the whole reason I bought a 10.4, there's something about an sbr that just makes you feel great.
    I gotta agree with that, it doesnt get much better than a 10.3" rifle

  8. #28
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    I run a 10.5 Noveske w/ a SwitchBlock and it runs great suppressed. I would recommend the SwitchBlock wholeheartedly. It also lets me turn the gun into a single shot for when I am running sub sonic, for that extra bit of quite.

  9. #29
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    Go with the Switchblock, you won't regret it.

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