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Thread: BRT OPTIMUM Barrels

  1. #31
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    Quote Originally Posted by Clint View Post
    The "default" thread is 5/8-24, except for light barrels with .625 gas blocks and specials like the 14.0" Mid that are designed for a specific set of muzzle devices.
    Using a A2 FH and a A5H2 with Colt rifle spring, what sort of ammo is that gas port spec’d for on the 14” Mid? The weakest ammo I want to shoot with it is Fusion MSR. Hottest is M855.
    RLTW

    Former Action Guy
    Disclosure: I am affiliated PRN with a tactical training center, but I speak only for myself. I have no idea what we sell, other than CLP and training. I receive no income from sale of hard goods.

  2. #32
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    Quote Originally Posted by Clint View Post
    The "default" thread is 5/8-24, except for light barrels with .625 gas blocks and specials like the 14.0" Mid that are designed for a specific set of muzzle devices.
    You're killin me

  3. #33
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    Which combo are you looking for?

    Quote Originally Posted by scooter22 View Post
    You're killin me
    Black River Tactical
    BRT OPTIMUM Hammer Forged Chrome Lined Barrels - 11.5", 12.5", 14.5", 16"
    BRT EZTUNE Preset Gas Tubes - PISTOL, CAR, MID, RIFLE
    BRT Bolt Carrier Groups M4A1, M16 CHROME
    BRT Covert Comps 5.56, 6X, 7.62

  4. #34
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    We haven't ported the 14.0" yet, but it should perform similarly to the 16", which runs at full reliability margin with most .223 and all 5.56 brass cased ammo.

    The PMC bronze and Wolf 55gr steel case are the lowest pressure and work a little better with an A5H1 buffer.

    The beauty of our OPTIMUM configurations is there's minimal cycling variation between the lightest and heaviest pressure loads.

    Fired brass comes out looking nearly new, with a near complete absence of extractor pull marks, ejector swipes or deflector dings.

    Quote Originally Posted by 1168 View Post
    Using a A2 FH and a A5H2 with Colt rifle spring, what sort of ammo is that gas port spec’d for on the 14” Mid? The weakest ammo I want to shoot with it is Fusion MSR. Hottest is M855.
    Black River Tactical
    BRT OPTIMUM Hammer Forged Chrome Lined Barrels - 11.5", 12.5", 14.5", 16"
    BRT EZTUNE Preset Gas Tubes - PISTOL, CAR, MID, RIFLE
    BRT Bolt Carrier Groups M4A1, M16 CHROME
    BRT Covert Comps 5.56, 6X, 7.62

  5. #35
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    Quote Originally Posted by Clint View Post
    They'll both cycle great with identical EXT gas system configurations.

    The MPR is 3.5 ounces lighter and will handle extremes better due to the material and finish.

    The SPR is thicker at the chamber, however so there shouldn't be much real world concern with cold temps.

    It's hard to go wrong; they're both really great choices.

    ,
    Sounds like I have 1st world problems A shooting buddy is at the same crossroads as me on this one. I think I'll grab one and he'll grab the other and try to do a head to head comparison. We'll have to flip a coin on who gets what.

    What are the projectioned dates for delivery? N/M, it says October.

    Somehow I completely missed the LPR Barrel...
    Last edited by opngrnd; 09-17-18 at 19:29. Reason: Added question, then corrected myself

  6. #36
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    Quote Originally Posted by Clint View Post
    Which combo are you looking for?
    The 14” looks good. I just don’t want to have to buy a 7.62 can for the 11.5”


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  7. #37
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    Quote Originally Posted by Clint View Post
    We haven't ported the 14.0" yet, but it should perform similarly to the 16", which runs at full reliability margin with most .223 and all 5.56 brass cased ammo.

    The PMC bronze and Wolf 55gr steel case are the lowest pressure and work a little better with an A5H1 buffer.

    The beauty of our OPTIMUM configurations is there's minimal cycling variation between the lightest and heaviest pressure loads.

    Fired brass comes out looking nearly new, with a near complete absence of extractor pull marks, ejector swipes or deflector dings.
    I’ll go ahead and preorder that, then. Sounds like what I am looking for.
    RLTW

    Former Action Guy
    Disclosure: I am affiliated PRN with a tactical training center, but I speak only for myself. I have no idea what we sell, other than CLP and training. I receive no income from sale of hard goods.

  8. #38
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    What are your thoughts on a good rail for the 9"?

  9. #39
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    Quote Originally Posted by Snyyder View Post
    What are your thoughts on a good rail for the 9"?
    KAC URX4 8”


    Sent from my iPhone using Tapatalk

  10. #40
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    Quote Originally Posted by scooter22 View Post
    KAC URX4 8”
    Excellent


    Quote Originally Posted by Snyyder View Post
    What are your thoughts on a good rail for the 9"?
    Any 7" rail will work fine.

    An 8" rail will work perfectly, although the selection is somewhat limited.

    Most 9" rails will work, but will cover the first 5/8" of the muzzle device, which may limit the functionality of many devices and suppressor mounting options.

    This is a basic 7" rail over the proof of concept PDW barrel.

    Black River Tactical
    BRT OPTIMUM Hammer Forged Chrome Lined Barrels - 11.5", 12.5", 14.5", 16"
    BRT EZTUNE Preset Gas Tubes - PISTOL, CAR, MID, RIFLE
    BRT Bolt Carrier Groups M4A1, M16 CHROME
    BRT Covert Comps 5.56, 6X, 7.62

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