Looking for info on a custom rifle produced by Flaig's a company out of Millvale, PA that closed in the 70s as I recall. It has a 7mm FN Rem Mag barrel. The barrel and receiver was made by the Belgium company, Fabrique Nationale (FN). Info that I have uncovered is sketchy. Also, looking for info on difference between a long bolt extractor and short bolt extractor regarding the above rifle for dating of the rifle. Pictures would be great.