Armalite AR 15 build

plasmatic

April 03, 2012 14:40

I would like to build an AR 15 using an Armalite U15A4C complete upper. Can I use any AR 15 mil-spec lower? I find alot of info. on the Armalite AR 10 builds and how certain lowers are not compatible, however not much info. on this topic. In short, is the Armalite U15A4C upper compatible with AR 15 mil-spec lowers? Any advice is welcome.

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  Mobuck

  April 03, 2012 15:31

  Yes, the AR15 uppers will fit other brands of mil-spec lowers.

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  midnightrunpaintballer

  April 03, 2012 18:18

  I'll second that. Yes, they are compatible

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  armilite

  April 03, 2012 19:20

  They are compatible with any AR15 lower the problem arises when you trying to swap An Armalite AR10 upper or lower with another brand.

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