He may be referring to the etched vs. painted MATCH" on front of compensator. HK only offered the Match in Stainless, not nickel.
Is there any info on when the switch to painted on vs. engraved occurred? My KH came with the black case and the engraved weight. So it was "earlier" and "later" with what it came with.There are two match weights, engraved and paint filled and painted on. No difference in function but the first ones were engraved and they do show up from time to time and demand a premium for THE COLLECTOR.