PF upper and BravoCompany KMR compatibility?

[olde sarge]

Variable, my upper measures .625" so would probably not work I guess. Would certainly be marginal. My measurement was taken with calipers not calibrated in 14 years so +/- .002" at best. Might be able to file the steel alignment clip to fit. Was hoping for a fit where I would not have to fiddle with parts to get them to fit properly. Thanks for your effort in measuring your upper. John