14.5" AR - pin & weld muzzle device or SBR?

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  • T-DOGG

    I'm Spicy, deal with it.
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    Feb 4, 2011
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    Got the pin & weld job done yesterday. AllenM exceeded my expectations. The flash hider portion is welded to the mount in 4 spots and the mount is pinned/welded to the barrel. I'm glad I went this way after taking all things & advice into consideration. A 14.5" SBR seemed pointless to me since the barrel length is so close to being rifle length and really defeats the purpose of what most people want to achieve with an SBR, which is to have a much shorter overall length.

    Some gun porn:

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    KJQ6945

    Grandmaster
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    Aug 5, 2012
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    Got the pin & weld job done yesterday. AllenM exceeded my expectations. The flash hider portion is welded to the mount in 4 spots and the mount is pinned/welded to the barrel. I'm glad I went this way after taking all things & advice into consideration. A 14.5" SBR seemed pointless to me since the barrel length is so close to being rifle length and really defeats the purpose of what most people want to achieve with an SBR, which is to have a much shorter overall length.

    Some gun porn:

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    That looks great! Did I out get a chance to try it out yet?
     

    T-DOGG

    I'm Spicy, deal with it.
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    That looks great! Did I out get a chance to try it out yet?
    I did test fire 70 rounds through it prior on a pistol lower. I had some rounds not going fully into battery (maybe 10-12), mainly with the can on and the gas setting at the lowest (suppressed) position, so I can tell some of the tolerances in the BCG & barrel extension are tight and it will require a break in period to get 100% functioning.
     

    EMT-Alex

    Plinker
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    Jun 8, 2021
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    Anderson
    I have a 14.5" AR piston upper on order that I plan to run suppressed with my Sig SRD762ti-QD can. The Sig QD mount system is a 2-piece design. The QD mount screws onto the barrel, the muzzle device then screws into the mount. If I use their flash hider setup, this will add just under 1.52" to my barrel length giving me over 16" total. The 2 piece setup would need fused together for ATF compliance with perhaps silver solder. The suppressor seats on the mount at the tapered area.

    Here is my current dilemma. Do I run the upper on a pistol lower using a brace, have the QD mount/muzzle device pinned & welded, or go the SBR route?

    Pistol w/brace
    pros:

    - least expensive (already have a lower I can use)
    - muzzle device is not permanently attached, easily removed
    - no waiting period
    - no tax stamp required
    cons:
    - not a fan of an AR pistol this long in regards to asthetics (braces aren't sexy)
    - prefer an actual stock vs. brace in regards to comfort while shouldering/shooting

    Pin & Weld
    pros:
    - puts barrel at 16" for use on a rifle lower
    - no tax stamp requirement
    - can swap to different rifle lowers if desired
    cons:
    - additional cost (shipping and gunsmith)
    - muzzle device is permanently attached, not easily removed
    - fusing the mount and muzzle device together could be tricky for the gunsmith as that seam needs to remain flush so the suppressor can slide past that area
    - waiting period due to shipping both ways and the actual time at the gunsmith

    SBR
    pros:
    - ability to use a stock instead of a brace
    - muzzle device is not permanently attached
    - my first SBR, which has appeal all on it's own
    cons:
    - additional cost
    - tax stamp required
    - waiting period (which could be minimal going by recent wait times)
    - have to notify ATF of any out of state travel (I frequent a range in Ohio)
    - have to get lower receiver engraved

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    F73B7D3B4D4D4E7B8B884294A6612034D60DBA28.jpg
    Registration leads to confiscation. As a former resident of California, all things I had registered with the DOJ had to be turned in when the state changed their mind.

    It’s better in my opinion to go with the pin and welded option or use a pistol brace.
     

    daddyusmaximus

    Grandmaster
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    82   1   0
    Aug 21, 2013
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    Remington
    Registration leads to confiscation. As a former resident of California, all things I had registered with the DOJ had to be turned in when the state changed their mind.

    It’s better in my opinion to go with the pin and welded option or use a pistol brace.
    True, and even if you happen to have a firearm in your possession from a private sale, that won't save you when they come barging in at 3am, or when you're not home. Best everything you have be 100% legal... should you be surprised, and outnumbered one day by somebody who wants them more than you do.

    The 14.5 with the pin & weld gets me the most fps, in the smallest package, with the least amount of attention being called to myself, hopefully. (of course, there may be others as well)
     

    Tombs

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    Jan 13, 2011
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    Registration leads to confiscation. As a former resident of California, all things I had registered with the DOJ had to be turned in when the state changed their mind.

    It’s better in my opinion to go with the pin and welded option or use a pistol brace.

    Unpopular opinion, but if you own a firearm without taking your rights seriously, I'd just have to ask, why?

    If someone comes to take away your rights, that's what the firearm exists for. If someone doesn't feel comfortable with that, they might as well just sell their guns now.

    So they come knocking... We all die some day. It helps to remember this when selecting gear and modifications for a firearm.
     

    daddyusmaximus

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    82   1   0
    Aug 21, 2013
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    Unpopular opinion, but if you own a firearm without taking your rights seriously, I'd just have to ask, why?

    If someone comes to take away your rights, that's what the firearm exists for. If someone doesn't feel comfortable with that, they might as well just sell their guns now.

    So they come knocking... We all die some day. It helps to remember this when selecting gear and modifications for a firearm.
    If someone comes... that's one thing.

    If someone comes at 3am when you're asleep, they outnumber you 6 or 8 to one, out gun you with all the full auto, and night vision toys you can't afford, and they put your entire family at risk.... that's another matter all together.

    There's such a thing as living to fight another day.
     

    T-DOGG

    I'm Spicy, deal with it.
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    262   1   0
    Feb 4, 2011
    17,408
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    New Haven
    Registration leads to confiscation. As a former resident of California, all things I had registered with the DOJ had to be turned in when the state changed their mind.

    It’s better in my opinion to go with the pin and welded option or use a pistol brace.
    Might want to check the dates of this discussion. This was a project from 2 years ago that was completed and sold off later on. I had long forgotten about until now.
     

    Tombs

    Grandmaster
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    0   0   0
    Jan 13, 2011
    12,022
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    Martinsville
    If someone comes... that's one thing.

    If someone comes at 3am when you're asleep, they outnumber you 6 or 8 to one, out gun you with all the full auto, and night vision toys you can't afford, and they put your entire family at risk.... that's another matter all together.

    There's such a thing as living to fight another day.

    If you surrender your rights, there's no such thing as living to fight another day, either for you or your family.

    Listen to folks who've had it happen to them in their countries.

    At least you have a chance to win the fight if you're squared away and prepared. If you surrender, you're worse off than dead.
     

    daddyusmaximus

    Grandmaster
    Rating - 98.8%
    82   1   0
    Aug 21, 2013
    8,508
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    Remington
    If you surrender your rights, there's no such thing as living to fight another day, either for you or your family.

    Listen to folks who've had it happen to them in their countries.

    At least you have a chance to win the fight if you're squared away and prepared. If you surrender, you're worse off than dead.
    Hey, I'm as squared away, and prepared as I can get.

    Experienced too if my 28 years in the United States Army (3 combat tours, leading me to retire as a cripple) says anything about what I'm willing to do under fire... but let me tell you that when you're a civilian in your own home, and you don't have an infantry plt to pull 50% alert... you can't ALWAYS be ready for they door to be kicked in 24/7.

    And NO, you're not worse off than dead. When you're dead, you can no longer cause their operations any harm. That's why S.E.R.E. training exists... I'm sure that training has changed quite a bit in the last 40 years, but having a "never say die" mindset will still get you a long way.

    You have my blessing to go out in a blaze of glory. The rest of us will sit around the campfire and tell stories of how you died well...

    AFTER we win. Please pick your battles wisely.
     

    bobjones223

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    55   1   0
    Mar 3, 2011
    1,780
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    Noblesville, IN
    Is an SBR worth $100.00 an inch and being on the ATF list for 2" that you will probably never remove anyway?:twocents:

    I would pin it no question asked...if you were talking a shorter package that would be another discussion.
     
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