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Thread: Educate me on 10.5" and cans....

  1. #11
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    Assuming it's a decent barrel, yes, you just screw it on.

  2. #12
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    Quote Originally Posted by Artos View Post
    I don't think I want to mess with the quick connects as it will be dedicated.
    Fast attach is really the ONLY way to go. Before I actually owned a silencer, I though I'd be fine with a thread on can. Now that I've spent some time in the silencer realm, there's NO WAY I could say a thread on can would be the better choice for a auto loading gun.

  3. #13
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    I also want to point out that most baffle strikes come from a can that has come loose while shooting. I have a YHM phantom, that I bought mainly because of the $260 dealer demo price I got it for. After shooting it and others, I have come to the conclusion that although it is heavier and the mount is ugly, it is probably the least likely can out there to have a baffle strike. You can have it only a couple of threads on and it will be correctly lined up. I think AAC is great stuff, and I would like to have one but I have talked to several people including Robb, that have had theirs shoot loose. When it comes to ammo problems it doesnt matter what can you have, but I believe most baffle strikes/ blown up can are alignment issues.

    Matt

  4. #14
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    Quote Originally Posted by markm View Post
    The best bang for the buck in a can for a 10.5 is the M4-2000. It's under a thousand dollars.

    A can on an SBR is still too loud for me to shoot without ear pro. Some people aren't bothered by it, but my ears ring... especially the ear by the ejection port.

    I don't run my can on anything under 14.5" since for recreational shooting, it defeats the purpose. Shooting a silencer with ear pro on is just putting wear on your can.

    5.56 rifle cans are somewhat maintenance free. I just clean my mount and what I can get in the blast chamber.

    For 10.5, an LMT is the way to go. If you're mounting a can, you might as well get every bit of 1/7 twist to safely stabilize the bullet as it goes through the baffles. I had a guy shoot a mag full of M855 through my M4-1000. It was mounted on a 1/9 twist barrel. I was a little concerned since ss109 is a fairly long bullet, but it did fine.

    1/7 will actually cause MORE stability issues than 1/9 with the SS109 projectile. 1/9 was the original spec for that projectile and at 24-500fps and faster, provides a GSTAB of 1.28 or greater IIRC.

  5. #15
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    I recently had the opportunity to shoot a 10.5" AR with a Gemtech M4-02.

    This combination is definitely not the quietest way to suppress an AR, but then again, the AR is not really worth suppressing.

    The problem is the sonic crack from the bullet is pretty loud. Anyone who has worked "the pits" at a high power match can attest to that.

    If you load up subsonic .223 loads, you now have a 70 gr, .22 cal bullet moving at .22 long rifle handgun speeds. You're better off with a 10/22.

    So, you can have a quiet toy with useless balistics, or you can have a less loud, but uesful gun.

    I've chosen the "less loud" route.
    The Gemtech on the 10.5" results in a gun that is shorter than an M4 with a standard flash suppressor. Its much quieter, and is a lot of fun to shoot.

    Re the wear and tear on the can. Gemtech will repair or replace the can forever. So no biggie.

    I liked it so much I bought a LMT 10.5" upper and an M4-02. Still waiting on the paperwork for the M4-02

    Don

    p.s. if you want something quiet and useful, you need to go with something with a larger diameter like a 9mm or a .45. It would be great if someone worked up some 400 grain .458 Socom or .500 beowulf subsonic loads. The matching suppressor, if built to only survive subsonic pressures, could be made fairly light and small. That would be an interesting combination.
    Last edited by dcmdon; 04-08-09 at 01:36.

  6. #16
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    Quote Originally Posted by dcmdon View Post
    I recently had the opportunity to shoot a 10.5" AR with a Gemtech M4-02.

    This combination is definitely not the quietest way to suppress an AR, but then again, the AR is not really worth suppressing.
    That's your opinion. Thousands of use disagree. The AR is the ONLY gun I supress.

    The problem is the sonic crack from the bullet is pretty loud. Anyone who has worked "the pits" at a high power match can attest to that.
    The problem is MORE than simpley the sonic crack. A short barrel with silencer gives of very loud port noise. This isn't noticeable to bystanders, but it's loud in the shooter's position.

    If you load up subsonic .223 loads, you now have a 70 gr, .22 cal bullet moving at .22 long rifle handgun speeds. You're better off with a 10/22.
    A jacketed bullet can't really be compared to a rimfire projectile. People make this link all the time, and it's not valid. But I agree that subsonic AR ammo is silly nonsense.


    The Gemtech on the 10.5" results in a gun that is shorter than an M4 with a standard flash suppressor. Its much quieter, and is a lot of fun to shoot.

    Re the wear and tear on the can. Gemtech will repair or replace the can forever. So no biggie.
    Every decent silencer maker will do this. Gemtec's cans are just not as robust as some of the others. If the can is beyond repair we all have to pay for a new tranfer... regardless of make.

    p.s. if you want something quiet and useful, you need to go with something with a larger diameter like a 9mm or a .45.
    This is completely false. Where did you get this idea from? .45 is one of the HARDEST calibers to silence. The larger the bore the harder it is to silence and still keep the diameter of the can reasonably small. This is why many of the .45 and some 9mm cans are fired "wet".
    Last edited by markm; 04-08-09 at 10:30.

  7. #17
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    I dont know what the hell I was thinking when I said the .223 was not worth suppressing. I really meant to say that its not worth building up subsonic loads for the .223.

    From there I should have said that if you need QUIET. You are better off with a 9mm. The point in my head, that I failed to make, was that a subsonic .223 is going to be quiet, but not terribly effective. A subsonic 147 grain 9mm is going to be (nearly) equally quiet, but pack much more of a punch.

    Re the .45 being difficult to suppress. I have only shot a suppressed .45 once. It was an HK USP (or was that UMP), either way the conversion sub gun. It was very quiet, quiet enough so the loudest sound was the plate ringing and the action cycling.

    I uncerstand that the large hole makes suppressing more difficult, but with subsonic ammo, its still pretty quiet, and with a 200+ grain bullet, it can be effective downrange.

    Re longevity - my experience is admittedly limited to semi-auto use. So cans effectively last forever.

    I didnt mean to single out Gemtech as better than other companies. My point was merely that if you shoot one out, they will fix it.

    Don
    p.s. thanks for keeping me in line. It was late, I couldnt sleep. ; -)

  8. #18
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    Quote Originally Posted by markm View Post

    For 10.5, an LMT is the way to go. If you're mounting a can, you might as well get every bit of 1/7 twist to safely stabilize the bullet as it goes through the baffles. I had a guy shoot a mag full of M855 through my M4-1000. It was mounted on a 1/9 twist barrel. I was a little concerned since ss109 is a fairly long bullet, but it did fine.

    1/9 is the most compatible twist for M855.
    Last edited by scottryan; 04-08-09 at 14:09.
    "Not every thing on Earth requires an aftermarket upgrade." demigod/markm

  9. #19
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    Quote Originally Posted by scottryan View Post
    1/9 is the most compatible twist for M855.
    Cool. I'm still nutty about sending longer bullets thru my can.

  10. #20
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    Quote Originally Posted by dcmdon View Post
    Re the wear and tear on the can. Gemtech will repair or replace the can forever. So no biggie.
    Most of the big names will also do this but you now will pay a $200 gem-tax so to me it is a "biggie" to have to send my can in to be serviced.

    Quote Originally Posted by dcmdon View Post
    Re longevity - my experience is admittedly limited to semi-auto use. So cans effectively last forever.
    Forever huh? So Kevin from AAC and Trey Knight were wrong when they both told me even on a semi-auto the can will need to be serviced after 5k rounds give or take on a 10.5?

    I guess if you shoot 20 rounds every other months very very slowly then yeah it may last forever. Some people run their semi's pretty hard though.

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