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Thread: AR 15 SBR Choices and Decisions

  1. #21
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    Quote Originally Posted by Jwknutson17 View Post
    I would say with the MK18 these days its almost necessary to have an adjustable gas block if your even thinking about running a can.
    My 10.5 has a fixed FSB. I'd love to be able to tune its gas down just a little. It'd be way too snappy if I had a can on it.
    "You people have too much time on your hands." - scottryan

  2. #22
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    Quote Originally Posted by markm View Post
    Grant's has an adjustable block though... critical difference. Pappa's gun was a stock LMT 10.5. He texted me all crapped out because it wouldn't run for shit.....

    After thinking on it for a bit and remembering that I'd read the E carriers were not designed for shorter carbines, I got back at him and sure enough... he'd put one of those turds in the gun. Swapped it out and problem solved.
    Not at that time. His goal was to have a shorty that would run suppressed or unsuppressed with a single port size, without being over-gassed. Read Grant's post.

    As an aside, was PapaBear using an enhanced bolt or standard bolt? If I recall, it was the early style enhanced bolts that proved to be unsuitable for shorties
    INSIDE PLAN OF BOX
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  3. #23
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    Quote Originally Posted by MistWolf View Post
    Not at that time. His goal was to have a shorty that would run suppressed or unsuppressed with a single port size, without being over-gassed. Read Grant's post.

    As an aside, was PapaBear using an enhanced bolt or standard bolt? If I recall, it was the early style enhanced bolts that proved to be unsuitable for shorties
    I think he put the full E TARD package in that thing.... You're probably right on G money's gun. I honestly didn't read the thread at the time, and only went back to it briefly after having the adjustable block epiphany on my own.
    "You people have too much time on your hands." - scottryan

  4. #24
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    PT, I'd strongly consider making your own SBR via form 1 versus buying a factory SBR. Current form 1 approvals appear to be running under 30 days. As far as barrel length goes, I've had great success with the 11.5.

  5. #25
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    Quote Originally Posted by mtdawg169 View Post
    PT, I'd strongly consider making your own SBR via form 1 versus buying a factory SBR. Current form 1 approvals appear to be running under 30 days. As far as barrel length goes, I've had great success with the 11.5.
    Someone here got his back in 19 days.
    "You people have too much time on your hands." - scottryan

  6. #26
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    Quote Originally Posted by markm View Post
    Someone here got his back in 19 days.
    Thank you, offline somebody had offered me some advice on this point. I'll have to further investigate and make sure I understand the difference between"making your own SBR via Form 1" vs. buying a factory SBR.

    But, at this point, I'd "build" one simply by buying a SBR upper and then a lower, separately?

  7. #27
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    Or registering any existing lower as an SBR, and then buying the upper.

    I know guys who simply register all their ARs as 10.5 SBRs regardless of what upper they have on it.
    Last edited by markm; 08-28-14 at 14:43.
    "You people have too much time on your hands." - scottryan

  8. #28
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    BCM Blemished, Noveske Chainsaw, or something like that - they're functional, and those blemishes only matter for resale value (which you're going to ruin by engraving anyway). eForm 1's are running smoothly (I at least got my latest reject letter in four weeks, so that should be a fairly quick re-submit after making an embarrassingly small fix), so that route works great.

    As for the upper - if a BCM 11.5" KMR upper is an option, it's really hard to beat. An 11" handguard does everything I need it to, my compressed 8" handguard on my 10.5" upper only makes sense in the context of having a <29" OAL suppressed setup.

    Since it's fairly possible to get a Blemished lower to Form1, you can afford to run some aftermarket stuff on it (VLTOR A5 on mine for a suppressed-only still runs awesome, GSSA, etc.). If BCM is still running those deals/steals on the KMR uppers, I don't see why not, unless you particularly want a Mk18 upper, or something else.
    عندما تصبح الأسلحة محظورة, قد يملكون حظرون عندهم فقط
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  9. #29
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    I see, I would just register one of my existing AR lowers as an SBR and then I can pop whatever upper I want on it? SBR or regular?

  10. #30
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    Exactly.
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