SPR 5.56 Larue OBR

Brandon7766

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I've been looking at the Larue OBR to turn into an SPR, a precision rifle, should I do the 18 inch / mid length barrel or the 20" inch with rifle length gas system?
 

gits

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May 31, 2010
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Re: SPR 5.56 Larue OBR

Either will do you fine, I run a 16inch OBR and it runs at 2717 using SW Ammunitions 77GR. I've made consistent hits out at 735m on Larue targets (Although not enough RemE to knock them down) . Its pretty much preference on what you like, both will do you fine.
 

M24_SWS

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Re: SPR 5.56 Larue OBR

My personal opinion would be the 20 inch rifle length. I say that becuase the 20 inch barrel can help squeeze a little more velocity out of the projectile and for long range accuracy, the longer barrel may help but will not hurt. Im a big fan of rifle length gas systems i like their reliability overall, just my opinion.

Heath
 

Drifter™

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Re: SPR 5.56 Larue OBR

If the added length and weight isn't a significant issue, a rifle length gas system coupled with a rifle length buffer system certainly makes for a smooth operating setup. Not a requirement by any means for an accurate and reliable rifle, but the difference is noticeable in my experience.
 

mrgreentie

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Re: SPR 5.56 Larue OBR

If your main job for this rifle will be precision, go with the 20". For Defense/3 Gun/Accuracy combo, go with 18". Assault, duty, or defense, go with 16" or less.

Just my 2-cents


...
 

mackdrvr

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Nov 23, 2008
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Re: SPR 5.56 Larue OBR

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: M24SWS</div><div class="ubbcode-body">My personal opinion would be the 20 inch rifle length. I say that becuase the 20 inch barrel can help squeeze a little more velocity out of the projectile and for long range accuracy, the longer barrel may help but will not hurt. Im a big fan of rifle length gas systems i like their reliability overall, just my opinion.

Heath </div></div>

I agree.
 

Elnino31

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Oct 14, 2011
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Re: SPR 5.56 Larue OBR

Not sure how far you'll be shooting but, a 20" isn't going to make that much of a difference unless you're really stretching the caliber. But if you're picking up an OBR.. maybe you are.

For me, I'd save the 2 inches and go w/ an 18". JMHO
 

BERTMAN77MK2

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Dec 17, 2009
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Re: SPR 5.56 Larue OBR

My vote is for 20" ---If I only had 1 AR it would be 18"----but......variety is the spice of life--ha!
 

5RWill

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  • Oct 15, 2009
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    Re: SPR 5.56 Larue OBR

    Either or but make sure you get rifle. I wouldn't want a 18" with a mid length gas system, just not my preference. I love my mk12 mod 1. But i can't deny i wouldn't like to build a SAM-R
     

    VTgunner

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    Dec 9, 2009
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    Re: SPR 5.56 Larue OBR

    I was thinking about the 5.56 OBR as well but then I found out that .308 Federal ammo is cheaper (I'm not in a position to reload right now) by about $8 a box, so I'm thinking about going with the 7.62 OBR now.