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Thread: Do I need to pin the gas block

  1. #41
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    Got it!

    Thank you!

    Quote Originally Posted by BufordTJustice View Post
    Order placed.
    Black River Tactical
    BRT OPTIMUM HFCL Barrels - Hammer Forged Chrome Lined 11.5", 12.5", 14.5"
    BRT OPTIMUM Barrels - 16" MPR, 14.5" MPC, 12.5" MRC, 11.5" CQB, 9" PDW
    BRT EZTUNE Preset Gas Tubes - CAR and MID
    BRT Covert Comps 7.62, 5.56, 6X, 9mm
    BRT MarkBlue Gas Tubes - BRT EXT, EXC and PDW Lengths
    BRT MicroPin Gas Blocks - .750" & .625"
    BRT MicroTUNE Adjustable Gas Blocks
    BRT CustomTUNE Gas Ports

  2. #42
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    I have one of the ,750 Black River blocks on a current barrel and Im getting ready to swap the barrel out. Once it has been drilled and pinned is it reusable?

  3. #43
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    Trying to re-pin it would most likely produce less than great results.

    I've never tried it.

    That's always the question with AR parts: to rebuild it or build a new one and sell the old one?

    Everyone has different answers, but there is probably more value in leaving the block pinned to the current barrel and selling or re-using it as a set.

    Just grab a new block for the new barrel and drive on.

    As luck would have it, they're on sale now.

    http://www.blackrivertactical.com/concrete5/sale/

    Quote Originally Posted by AFshirt View Post
    I have one of the ,750 Black River blocks on a current barrel and Im getting ready to swap the barrel out. Once it has been drilled and pinned is it reusable?
    Last edited by Clint; 11-29-13 at 11:24.
    Black River Tactical
    BRT OPTIMUM HFCL Barrels - Hammer Forged Chrome Lined 11.5", 12.5", 14.5"
    BRT OPTIMUM Barrels - 16" MPR, 14.5" MPC, 12.5" MRC, 11.5" CQB, 9" PDW
    BRT EZTUNE Preset Gas Tubes - CAR and MID
    BRT Covert Comps 7.62, 5.56, 6X, 9mm
    BRT MarkBlue Gas Tubes - BRT EXT, EXC and PDW Lengths
    BRT MicroPin Gas Blocks - .750" & .625"
    BRT MicroTUNE Adjustable Gas Blocks
    BRT CustomTUNE Gas Ports

  4. #44
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    Clint, the Gas block came in today. It was packaged well and appears to be perfectly finished. I'm very pleased. All exterior edges have been gently broken/radiused. The finish quality is very high and a semi-glossy black. All threads look perfectly clean.

    The only problem is that the Rainier Arms Mounatin Series 18" CHF barrel with rifle gas has a "match" size gas block journal that fits really tight. So I'm gonna use a little elbow grease to hone the inside of the gas black (rather than return it in favor of your slightly oversized GB, which would have been PERFECT).

    I'm 100% pleased so far. Waiting on a dimpling jig for the barrel (which came undimpled) before install.
    "That thing looks about as enjoyable as a bowl of exploding dicks." - Magic_Salad0892

    "The body cannot go where the mind has not already been."

  5. #45
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    Why not just use the gasblock instead? Not as a jig but to mark the point at which to dimple. I think it was CoryCop that posted it in The custom forum. Seeing that post kind of made me regret ever getting the jig.

  6. #46
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    Quote Originally Posted by Col_Crocs View Post
    Why not just use the gasblock instead? Not as a jig but to mark the point at which to dimple. I think it was CoryCop that posted it in The custom forum. Seeing that post kind of made me regret ever getting the jig.
    I thought about that, but i don't want to damage the threads at all.

    Do you have a link to Cory's thread? I'll at least take a look at it.

    Sent from my SPH-D710 using Tapatalk
    "That thing looks about as enjoyable as a bowl of exploding dicks." - Magic_Salad0892

    "The body cannot go where the mind has not already been."

  7. #47
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    Good deal.

    "Match Journal"? What does the journal diameter mic at?

    Quote Originally Posted by BufordTJustice View Post
    Clint, the Gas block came in today. It was packaged well and appears to be perfectly finished. I'm very pleased. All exterior edges have been gently broken/radiused. The finish quality is very high and a semi-glossy black. All threads look perfectly clean.

    The only problem is that the Rainier Arms Mounatin Series 18" CHF barrel with rifle gas has a "match" size gas block journal that fits really tight. So I'm gonna use a little elbow grease to hone the inside of the gas black (rather than return it in favor of your slightly oversized GB, which would have been PERFECT).

    I'm 100% pleased so far. Waiting on a dimpling jig for the barrel (which came undimpled) before install.
    Black River Tactical
    BRT OPTIMUM HFCL Barrels - Hammer Forged Chrome Lined 11.5", 12.5", 14.5"
    BRT OPTIMUM Barrels - 16" MPR, 14.5" MPC, 12.5" MRC, 11.5" CQB, 9" PDW
    BRT EZTUNE Preset Gas Tubes - CAR and MID
    BRT Covert Comps 7.62, 5.56, 6X, 9mm
    BRT MarkBlue Gas Tubes - BRT EXT, EXC and PDW Lengths
    BRT MicroPin Gas Blocks - .750" & .625"
    BRT MicroTUNE Adjustable Gas Blocks
    BRT CustomTUNE Gas Ports

  8. #48
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    Quote Originally Posted by Clint View Post
    Good deal.

    "Match Journal"? What does the journal diameter mic at?
    I use the term "match" loosley. I don't have a pair of calipers right now (they're on loan), but the gas block simply would not move forward into the raised portion of the journal. I have a spare FSB and it was too tight to fit properly either (wouldn't slide on the raised ledge past about 1/4").

    The issue is the RA barrel, for sure. Though, I'm not unhappy with the barrel, that's just life sometimes.
    Last edited by BufordTJustice; 12-05-13 at 16:19.
    "That thing looks about as enjoyable as a bowl of exploding dicks." - Magic_Salad0892

    "The body cannot go where the mind has not already been."

  9. #49
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  10. #50
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    Quote Originally Posted by Col_Crocs View Post
    Thank you, sir.

    That got me going. I just need a slightly larger drill bit to finish the dimples and I'll be done.

    Sent from my SPH-D710 using Tapatalk
    "That thing looks about as enjoyable as a bowl of exploding dicks." - Magic_Salad0892

    "The body cannot go where the mind has not already been."

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