I am sure this has been asked before, but what is the difference between the old K series scopes that are marked "El Paso" vs "Made in the USA"?? Is it just location or is there a quality issue? Also I am considering a K6 for an older rifle. Any advice on this model in particular?. I have a K4 and its funtion and appearance have been a source of enjoyment. I think the Weaver finish is a perfect match for the vintage rifles. Were there any other scopes that used the real "blue" finish. The vintage Leupolds function great but that purple color is way ugly. Thanks in advance- RP
