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Thread: Stupid Question: 12.5" + 4" linear comp?

  1. #1
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    Stupid Question: 12.5" + 4" linear comp?

    Hi all,

    I've been here for years... I'm fooling with the idea of building a non-NFA upper with a 12.5" barrel and a Kaw Valley Precision "XL" linear comp, which is 4.125". Nevermind the NFA issues: I would make sure that it's a full 16" and have it pinned and welded.

    My question is whether this is a fool's errand. This seems appealing because I like the idea of a suppressed SBR, but I live in California and it's impossible. (Trolls: Spare me the anti-California rants.)

    So, I can get a linear comp, and KVP's new "XL" is huge and should at least direct much of the blast/flash away from me, in the SHTF event that I need to fire the gun indoors.

    Alternatively, I could do a 14.5" barrel with a regular linear comp pinned and welded, but it seems like the bigger linear comp would do better directing blast forward, and the 2" of barrel length doesn't seem like enough to matter in terms of muzzle velocity (maybe 150fps?).

    Please advise...

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    Your "barrel" is going to be 16 inches regardless. Might as well get the velocity.

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    I guess that's the crux of my question: Assuming the bigger linear comp works, would it be worth giving up 150fps or so to reduce blast?

    I'm guessing that it's worth it at down-the-hallway or even across-the-yard distances, but I'm only guessing...

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    I guess I would ask myself, what is the benefit of this setup over a standard 16" barrel.

    I personally couldn't think of any, yet I could come up with a few negatives. You may have a different perspective that not seeing however.
    Quote Originally Posted by JSantoro View Post
    Stop dicking the dog, please. It's gross.

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    Quote Originally Posted by Ryno12 View Post
    I guess I would ask myself, what is the benefit of this setup over a standard 16" barrel?
    The benefit would be to reduce blast, or at least direct as much of it as possible away from me...

    A 16" barrel is a non-starter for me. Given that I would have some kind of muzzle device, I'd rather have it pinned and welded to reach 16", rather than 16" plus a device for 17"+. I have two 14.5" ARs with pinned & welded devices...

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    I don't think you'd get anymore blast reduction from a linear comp than you would the extra barrel length. The powder will be burning in the open air versus behind a projectile for those 2 inches.

    Never compared the two side by side but I'd imagine the blast would be extremely similar.

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    Quote Originally Posted by Leaveammoforme View Post
    I don't think you'd get anymore blast reduction from a linear comp than you would the extra barrel length.
    I'm not an engineer, but as I understand it the linear comp works like a muffler on a car, and it'll make a big difference in the level of blast, at least for the shooter... AFAIK the Noveske "pig" works well, and this is just a bigger version.

    I'm thinking here of the photos I've seen comparing the "flash hiding" performance of various muzzle devices vs. bare barrels.

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    I don't think you're gaining anything with a pinned 12.5" & I'm not sure you'd notice much of a difference in the "blast" between the two pinned setups. (12.5 vs 14.5) If anything, the 12.5" may still be worse even with the MD.

    I think 14.5's are some pretty nice shooters but you've got that covered.
    Save the money & spend it on something more worthwhile.

    Just my opinion...
    Quote Originally Posted by JSantoro View Post
    Stop dicking the dog, please. It's gross.

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    Quote Originally Posted by Bimmer View Post
    I'm not an engineer, but as I understand it the linear comp works like a muffler on a car, and it'll make a big difference in the level of blast, at least for the shooter... AFAIK the Noveske "pig" works well, and this is just a bigger version.

    I'm thinking here of the photos I've seen comparing the "flash hiding" performance of various muzzle devices vs. bare barrels.
    Understood. But, you're still going to have a linear comp on the 14.5 not a bare muzzle. Albeit, just shorter.

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    If the linear comp worked like a car muffler, it would be a suppressor. It directs the blast forward but does not reduce the noise. In your case, I would go with a longer barrel and a shorter linear comp. If I were in Cali, I'd go with a14.5" barrel and a pinned Battlecomp 2.0
    INSIDE PLAN OF BOX
    1. ROAD-RUNNER LIFTS GLASS OF WATER- PULLING UP MATCH
    2. MATCH SCRATCHES ON MATCH-BOX
    3. MATCH LIGHTS FUSE TO TNT
    4. BOOM!
    5. HA-HA!!

    -WILE E. COYOTE, AUTHOR OF "EVERYTHING I NEEDED TO KNOW IN LIFE, I LEARNED FROM GOLDBERG & MURPHY"

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