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- - Sig 556 / AR-15 interchange questions ? (http://goldismoney.info/forums/showthread.php?t=320930)

The Argent Dragon | 11-10-2008 04:15 PM
Sig 556 / AR-15 interchange questions ? Hey guys, how many parts are interchangeable between a Sig 556 and an Ar-15 ??? Can you swap receivers or what ? Or is it just the mags that fit both weapons ? *My question is for mounting an AR-15 compatible upper on my Sig such as a 50-cal conversion from Bohica. Thanks, -AD

Stonewall | 11-10-2008 04:24 PM
Re: Sig 556 / AR-15 interchange questions ? The uppers and lowers are not compatible, just the mags. Sig 556 pistol on the way!

eat_beef | 11-10-2008 04:29 PM
Re: Sig 556 / AR-15 interchange questions ? Won't work. Mags and a few other small parts interchange.

The Argent Dragon | 11-10-2008 04:41 PM
Re: Sig 556 / AR-15 interchange questions ? Thanks guys..........had an idea but I guess that's scrapped (for now).

eat_beef | 11-10-2008 04:54 PM
Re: Sig 556 / AR-15 interchange questions ? They aren't exacly a 'drop in fit' on AR lowers, either. They should be, but there is very little clearance for the bolt. If the AR lower is a hair out of spec, such that it still runs fine with an AR upper, it may not allow the uppers to work. That's all 50 uppers, not jsut the Bohicas.

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