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Thread: Dedicated suppressed upper port sizing and buffering.

  1. #11
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    Colt is .063 and that might be small enough. LMT might be smaller though, my LMT would choke on light ammo. Anyone know the 14.5 MRP gas port size?

  2. #12
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    the drill is 1/16th, which is .0625 and some extra decimals... so the manfers that use 1/16th for their carbine length 14.5-16" barrels generally come in at .061-.063, due to variables in drill wear, runout, etc. two thousandths isn't going to make a consistent noticeable difference, when you factor in everything else in the gun.

    just go with a manfer that drills at 1/16th, and you'll have what you want... so LMT, Colt, BCM, DD, off the top of my head, and others... but some do not. Sabre, for instance, drills .080 on ALL their barrels, regardless of length.

  3. #13
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    .080 across the board?!?!?!

    They DESERVE their jail time for that!

  4. #14
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    0.060 is not the size that Grant uses.

    I suspect it's closer to .056. (My 16.1'' cut to 14.5'' cut to 11.2'' uses this port.)

    It will make a difference if you want it to run %100 optimally with your specific suppressor, specific buffer, and the weakest ammo you'll use.

    Mine is for H3 (defensive ammo), and H2 (training ammo). Refer to Grant.
    We miss you, AC.
    We miss you, ToddG.

  5. #15
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    Since you don't want to listen to reason let me explain why this is not a smart idea.

    1. How are you going to clean the barrel or suppressor for that matter? If you go in the can from the front you will probably end up with patches getting stuck or leaving debris inside.

    2. If you from the rear you will be pushing shit into the can.

    3. How are you going to deal with a baffle strike should you have one?

    I encourage you to think this over and use some sense.



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  6. #16
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    Quote Originally Posted by bkb0000 View Post
    im not aware of any manfer that makes a barrel with a port smaller than .062, though some measure a thou or two smaller.

    ADCO Firearms was making some 11.5" SBR barrels with small gas ports. They were sold in a package with an OPS, Inc. M4-S suppressor and a flash hider mount. I do not know the exact size of the port. They indicated the barrel should be dedicated exclusively to use with the can. Otherwise, the port should be opened up.

    Unfortunately, I did not jump on this soon enough and they sold out. Probably not getting more and certainly not at the introductory price.

  7. #17
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    Quote Originally Posted by Iraqgunz View Post
    Since you don't want to listen to reason let me explain why this is not a smart idea.

    1. How are you going to clean the barrel or suppressor for that matter? If you go in the can from the front you will probably end up with patches getting stuck or leaving debris inside.

    2. If you from the rear you will be pushing shit into the can.

    3. How are you going to deal with a baffle strike should you have one?

    I encourage you to think this over and use some sense.
    1. I doubt he's going to be using as a 600 yard+ shooter. He stated it was for a house gun that would probably not see more than 500 rounds a year. For this type of use, a boresnake will work just fine.

    2. What little buildup there is inside the bore will be much less than buildup going out the bore during firing, especially on a shorter barrel.

    3. If he has a baffle strike, he;ll probably deal with it the same way everyone else does. Remove the can (or have a gunsmith remove it) and send it back.

    You seem very adamant on pushing your opinion. You've already told him multiple times not to do it, yet that is not what he was asking for; he was asking for advice on port size specs and a buffer.

  8. #18
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    Boresnake if I must although I rarely clean carbine barrels past the chamber. If I get a baffle strike Im in a world of hurt but oh well.

  9. #19
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    Quote Originally Posted by Keesh View Post
    You seem very adamant on pushing your opinion.
    Because it's a ****ING RETARDED IDEA for CHRIST'S SAKE.
    Last edited by markm; 03-22-11 at 10:36.
    "You people have too much time on your hands." - scottryan

  10. #20
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    Just because I'm gonna do it doesn't mean I don't know it's ****ing stupid...

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