.308 upper
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.308 upper

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Old 03-23-2012, 01:21 AM   #1
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Default .308 upper

Hey guys
I searched the web but couldn't get a confirmed answer. Will a .308 upper and mags fit on a 5.56 lower and function properly?
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Old 03-23-2012, 01:22 AM   #2
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however if you have a colt 901 in 308 you CAN fit any 556/223 upper and it will work
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Old 03-23-2012, 01:46 AM   #3
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Nope, yer talkin' AR-15 vs AR-10.

Here's a visual;

.308 upper - AR-15 Discussion

Not only does it make a bigger hole, it needs a bigger hole. (Mag well) .308 upper - AR-15 Discussion


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