AR15 lower build - safety detent won't fit

[Clarke123]

With the "crash" in the obscene prices that were being charged, likely do to the pre-election panic buying / ramp-up of supply to meet demand; the finish quality of most lower receivers has "slipped". The coatings appear to be one area of concern: I even found that the larger holes for the front / rear take-down pins seemed a "little out of plumb" due to the sloppy application of coatings! Anyone else notice the absence of the keyhole casting mark that was always present on most lowers from Brand Name sources? Leads one to believe that less reliable casting sources are being sourced(?)