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-   -   Multi cal lower? (http://www.firearmstalk.com/forums/f20/multi-cal-lower-87486/)

WhaleNoises 03-26-2013 07:52 PM

Multi cal lower?
 
If you get a multi cal lower, can you change the upper and use like 5.56 and a .308? or are the lowers completely different?

rednekked 03-26-2013 08:05 PM

The lowers for 5.56 (AR 15) and .308 (AR10), are different sizes. You cannot put a .308 upper on a 5.56 lower, or vice versa. You can however build a 7.62x39, 5.45x39, 9mm, 300Blk, 6.5, 6.8, 22lr, and some others with the ar15 lower, hence the multi Cal stamp.

mchoitz 03-26-2013 08:12 PM

Ar-10 is .22-250, .243, .308 and some others I can't name off the top of my head


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