Stallones, Based on the weight it is not a Sweet.
They two most obvious indicators are a gold plated trigger and safety and the holes drilled in the barrel ring. After 48 they had the name engraved on the receiver and anyone who can read knows the difference.
2 piper, He got steered inthe right direction but here is another nugget....even with the rest of the mods made to the receiver a barrel originally made for 2 3/4" shells will not work on the early receiver. The distance between the barrel ring and barrel extension is different.
Jeff
