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Thread: BRT OPTIMUM Barrels

  1. #201
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    We are investigating alternative finishes for the barrel extensions.

    Quote Originally Posted by jerrysimons View Post
    Thought about adding NP3 to the barrel extensions?
    Black River Tactical
    BRT OPTIMUM Barrels - 16" MPR, 11.5" CQB, 9" PDW
    BRT OPTIMUM-S Barrel - 11.5" CQB Suppressor Gas Drive
    BRT Covert Comps 7.62, 5.56, 6X, 9mm
    BRT MarkBlue Gas Tubes - BRT EXT and PDW Lengths
    BRT EZTUNE Gas Tubes - CAR and MID
    BRT MicroPin Gas Blocks - .750" & .625"
    BRT MicroTUNE Adjustable Gas Blocks
    BRT CustomTUNE Gas Ports

  2. #202
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    Quote Originally Posted by Clint View Post
    Yes, we're starting on a new run now.


    These are grouping nicely with the Federal 75 TMJ

    100 yards from a bipod, shaky reset and mil-spec trigger in 28 degree weather.


    20190320_172825.jpg
    More MPR goodness. TMK reloads gave a 4 3/16" group from 416 yards. Shooting from the top of a hay bale to get out of the snow makes a challenging rest, but it apparently works

  3. #203
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    Shot my 14Ē OPTIMUM yesterday. I donít have any groups to post, but I can say that it is very soft shooting with M855, A1 stock with Colt rifle buffer and spring, Forward Controls Design 1815 flash hider.

    A Guardsman I was shooting with pointed out the low recoil compared to her issued FN M4a1, unsolicited. She was not told anything about the rifle before shooting it. We worked on alternate supported and unsupported positions, barriers, shoulder transitions, and weak side firing.

    No stoppages to report. Ambient temp was 40-50F, rainy. Iím using a Forward Controls Design (S)BCG, which is super nice. Iím curious how it will run in colder weather, since it is such a soft shooter. Iím very happy with it thus far. If it vets well, it may end up being my favorite rifle, although I plan to replace the A1 stock with an A5.

    Side note: installing a pinned gas system with a URX4 is like building a ship in a bottle, but totally worth it.
    RLTW

  4. #204
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    Clint-other than the barrel length difference, how close are the MPR and 14" barrel in profile?

  5. #205
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    Wow!

    Not sure how I missed this thread.

    Iím only about 1/4 thru the thread.

    Iíll finish it tonight and will have some input.

    Awesome!


    Sent from my iPhone using Tapatalk
    "One cannot awaken a man who pretends to be asleep..."

  6. #206
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    Quote Originally Posted by taekwondopreacher View Post
    Clint-other than the barrel length difference, how close are the MPR and 14" barrel in profile?
    I canít answer this directly, but the 14Ē with 13Ē URX4 Mlok about half covered with plastic rail covers, full mass BCG, forged no forward assist Aero upper, regular forged lower with CTR buttstock, H2 buffer, MBUS sights, Aimpoint PRO with covers weighs 7lb 5oz unloaded, no sling. Same upper on a no-frills lower with A1 stock weighs 7lbs 8oz.
    RLTW

  7. #207
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    All the profiles share similar design parameters and scaling ratios.

    So, they're mostly the same, but each is slightly different.

    Quote Originally Posted by taekwondopreacher View Post
    Clint-other than the barrel length difference, how close are the MPR and 14" barrel in profile?
    Black River Tactical
    BRT OPTIMUM Barrels - 16" MPR, 11.5" CQB, 9" PDW
    BRT OPTIMUM-S Barrel - 11.5" CQB Suppressor Gas Drive
    BRT Covert Comps 7.62, 5.56, 6X, 9mm
    BRT MarkBlue Gas Tubes - BRT EXT and PDW Lengths
    BRT EZTUNE Gas Tubes - CAR and MID
    BRT MicroPin Gas Blocks - .750" & .625"
    BRT MicroTUNE Adjustable Gas Blocks
    BRT CustomTUNE Gas Ports

  8. #208
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    I like what I have read.

    What would be required to make one of your barrels work in an LMT MRP upper??

    Thatís what Iím thinking at the moment.

    Thanks.


    Sent from my iPhone using Tapatalk
    "One cannot awaken a man who pretends to be asleep..."

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