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Thread: Why 14.5" mid length, gov't profile?

  1. #11
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    What do you mean by "Government Profile"?
    Are you referring to M4 cut barrels, as usually a "government profile" is referring to the A2 style; pencil under HG, thick from FSB to muzzle. M4 profile generally referrs to a 14.5 to 16" barrel with the same profile, but with the 203 notch cut forward of the FSB.
    Jack Leuba
    Director, Military and Government Sales
    Knight's Armament Company
    jleuba@knightarmco.com

  2. #12
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    Quote Originally Posted by markm View Post
    I don't know why... but I shot a 14.5 middy barrel that Iraqgunz gave me Saturday, and it's NICE! An .080 port that runs both .223 and Mk262 very well. Gassed just right.

    Sucker shoots MOA too. It's going to make a handy carbine.
    Who make it?
    Proven combat techniques may not be flashy and may require a bit more physical effort on the part of the shooter. Further, they may not win competition matches, but they will help ensure your survival in a shooting or gunfight on the street. ~ Paul Howe

  3. #13
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    I read somewhere on here that 14.5 mid setups were giving people problems. Maybe crap ammo was causing the problems, don't remember.

  4. #14
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    Quote Originally Posted by jonconsiglio View Post
    Who make it?
    Sabre...

    Yeah.. the 14.5s can be picky with ammo if the port is .076. This .080 runs a full rifle buffer set up perfectly.

    As far as Govt profile... I'd prefer more meat on the barrel under the handguard... but the thing shoots.. so.
    "You people have too much time on your hands." - scottryan

  5. #15
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    Quote Originally Posted by duece71 View Post
    I read somewhere on here that 14.5 mid setups were giving people problems. Maybe crap ammo was causing the problems, don't remember.
    I have a 14.5 middie (BCM EAG) that would short stroke on weak ammo for about the first 1K rounds or so; now it can digest anything. I have always used an H buffer though, perhaps a carbine buffer in the beginning may have helped some. Coupled with the 1.5 Battlecomp it is arguably the "softest" shooting carbine I own.

  6. #16
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    Quote Originally Posted by Failure2Stop View Post
    What do you mean by "Government Profile"?
    Are you referring to M4 cut barrels, as usually a "government profile" is referring to the A2 style; pencil under HG, thick from FSB to muzzle. M4 profile generally referrs to a 14.5 to 16" barrel with the same profile, but with the 203 notch cut forward of the FSB.
    I assumed that by typing gov't profile, that it would be interpreted as 'Government Profile'. A2 profile.

    I was only talking about 14.5" midlength barrels. I've never seen an M203 notch on a mid-length barrel...

  7. #17
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    I agree that the 16" is kind of an arbitrary number for legal purposes.

    Why I think that it's silly is like I said - companies can offer the 14.5 inch, pinned to 16 inches, or just ship it as-is. Nearly everyone out there does something to the end of the barrel, right? Flash hider, compensator, silencer, etc. NONE of them actually shorten the OAL ... It just seems that 16 inch was chosen as a CYA for the manufacturers.

    After all, it's obviously not illegal to sell a < 16 inch barrel, it's on the owner to follow the law. Which raises the question (like the OP sort of alluded to), why 14.5 inches? What does 16 inch do better? In fact, we could ask why 14.5 inches?

  8. #18
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    Quote Originally Posted by samuse View Post
    I assumed that by typing gov't profile, that it would be interpreted as 'Government Profile'. A2 profile.

    I was only talking about 14.5" midlength barrels. I've never seen an M203 notch on a mid-length barrel...
    That's what I assumed, but wanted to clarify.
    Carry on.
    Jack Leuba
    Director, Military and Government Sales
    Knight's Armament Company
    jleuba@knightarmco.com

  9. #19
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    Quote Originally Posted by Caduceus View Post
    I agree that the 16" is kind of an arbitrary number for legal purposes.
    ...
    After all, it's obviously not illegal to sell a < 16 inch barrel, it's on the owner to follow the law. Which raises the question (like the OP sort of alluded to), why 14.5 inches? What does 16 inch do better? In fact, we could ask why 14.5 inches?
    The why of the 14.5" gov't profile was answered by the military.

    I am wondering why the mid-length was retro-engineered into the 14.5" gov't spec.

    The 14.5" mid has had some teething pains and is still not always as reliably functional with all ammo and buffer combinations.

    I'm willing to bet that the majority of 14.5" mid barrels end up with a permed muzzle device. 15" would have resulted in a little more dwell time and eliminated the need for an extended flash hider. The gov't profile is of no benefit to anyone.

    In my opinion, it would have been great to see the new standard in civilian market barrels go to a 15" or 16" mid with a regular lightweight profile.

    Daniel Defense still sells all their mids with gov't profiles with LW as an option, BCM just started putting free float fore ends on their LW uppers. Noveske came the closest with their N4 profile and Skinny 14.5"s.

    I'm always reading about 'which buffer for a 14.5" mid?', my mid won't cycle .223', etc... I see pictures of all the extended flash hiders pinned on 'em, everyone likes a lighter carbine.

    I've always said: "Why not 15" with lightweight profile?" It seems like it would be an easy answer to a lot of questions...

  10. #20
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    Yea I have never understood the Gov. profile. Seems like a little thicker under the hand guard would do much better than thick past the gas block.

    Not sure if there is any benefit out that far.

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