I don't mean to speak out of turn but this question has always been of interest to me, most current builders/suppliers offer something like the Edward Marshall gun or one like the Albrech gun, the main distiguishing features being a 37" barrel and a description that talks of a blending of Germanic and inovative Anerican styles, i have thought that there may ne little of no difference between "transitional"gun and an "early" longrifle, the Marshall gun was probably restocked in the 1760's or 70's and there is a true American longgun by Schriet dated at 1761, barrel length cannot really be a factor as there are a wide range of barrel lengths from 1740-1800 from German, English, colonial and American guns Some consider a transitinal gun one that is not exactly a gun from the homeland yet not a real example of the budding schools in the colonies some of which did not develope untill the Federal period, thus an early/transitional Lancaster gun would have been 20years the predesessor to a early/transitional Bucks gun. Some builders never dropped some of the old style traits into the early 1800's and an early/transitional gun by one of the Feree family or an English builder would have a different flavour than the Marshall or Albrech gun. I think the term early longrifle may be as good as transitional,I do not know if one can really make a case for two seperate entities here as the Colonial/American longrifle did evolve from the guns of Europe, and in different areas the change happened at different times and was affected by different influences. I think we have what is commercialy accepted/promoted as a transitional gun probably out of marketing stratigy more than anything else. one could make a case for a gun with more homeland features than non to be transitional but the same arguement could be made for an early longrifle that has not yet reached the point of completely fitting a particular school.