SAR1's dont have a stamped receiver, not milled. Fact is, the WASR is really basically just a slightly modified SAR. They were the import "get around" when the SAR's were "banned", and are brought into the country as a 10 rounder using a proprietary mag. They are then "converted" here, by opening up the mag well, to take a standard AK mag. The main noticeable difference is the lack of "dimples" on the WASR.-Milled receiver- the biggest reason.