question regarding buildout of AR lower

fuelfather

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I am trying to find out if anybody knows the facts regarding building out an AR lower stamped 5.56....i am wanting to know if i can still buy an upper of a different caliber or if it can only ever be 5.56....thank you in advance for any info:1zhelp:
 

Texas1911

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You can buy an upper in any caliber. The lower is just stamped that since it is designed to be used with .223 Rem / 5.56 NATO; hence it will not work with a .308 Win upper.

When you buy an upper, buy a 5.56 NATO upper so that you have a NATO chamber. Other options are 6.5 Grendel, 6.8 SPC, .204 Ruger, .50 Beowulf, .458 SOCOM, etc.
 

fuelfather

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ok...thank you...i have been looking at uppers and would love the idea of putting a 50cal upper on her for when the zombies learn how to drive
 

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