Check the bolt on it and see if it's the current style or the older shrouded style. If it's the older style and you're looking for a builder look elsewhere as most everything is different on them (barrels, bolt assembly, trigger assembly, etc.). Here's a couple pic's showing the difference in the bolts. You can upgrade everything to modern components, but by the time you factor in the cost of a complete new bolt assembly it's not a very good deal anymore. If you wanted to leave it as is then it's a steal.

Old style on left


Old style on top