AR-10 lower compatibility???

[nfranquez34]

Just bought an Aero Precision lower, anyone know which uppers will not be compatible besides Rock River?

[Ashick]

Gibbz Arms side charging upper doesn't fit well

[Drew Eckhardt]

Just bought an Aero Precision lower, anyone know which uppers will not be compatible besides Rock River?

Save yourself from potential headaches and get an Aero Precision upper.

With no standard blueprints everyone making DPMS pattern receivers except DPMS is using reverse engineered dimensions, and some may have opened up tolerances more for better compatibility with other vendors.

Your odds are best with a matched set followed by same vendor receivers.

IMHO accuwedges and O-rings shouldn't be necessary to make a $2000 gun feel like it should, and trying for that I wasn't happy with the fit of three different uppers from four sources on my DPMS brand LR-308 lower.

[nfranquez34]

awesome thanks, will have to wait until they're back in stock