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Archived [ARCHIVED THREAD] - Multi-cal necessary?
Posted: 1/23/2009 8:41:08 AM EDT
I performed a search without much luck.

Is it worth it to buy a couple lowers labeled "cal-multi" in case I might want to build an upper in another caliber some day in the future? Is it illegal to install an upper of a different caliber on a lower marked 5.56mm?

Thanks in advance for any answers.

Link Posted: 1/25/2009 7:40:54 AM EDT
[#1]
Perfectly legal to put a non 5.56 upper on a 5.56 marked lower.

Archived [ARCHIVED THREAD] - Multi-cal necessary?
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