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80% Percent Arms Lower match to what upper?

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I have used the 80% Arms Gen 2 jig a few times for AR15 Lowers.  I love the jig set, it' very well engineered.   

The jig does both AR15 and AR10, time to try a 308 build.


From what I gather, their 308 lower pattern is  DPMS pattern Gen 1.  They recommend an Aero Precision upper.  I have no problem with that upper, but I would like to know if anyone has have experience with fitment from an 80 Percent Arms Lower to any other upper besides an Aero Precision upper.


I would appreciate any input.


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