wasr conversions to high capacity are the same as sar-1's minus the magazine well dimples (magazine guides) found on the sides of all 'real' kalashnikovs.

the sar-1 = 7.62 x 39 calibre. this is a romanian copy of the akm (soviet type IV kalashnikov). the akm was introduced im 1959 and used by russia until 1974. it is still in use by other countries.

the sar-2 = 5.45 x 39 calibre. this one is a romanian rip-off of the russian ak-74, the latest kalashnikov to be adopted by the red army. many of this variant were built with an upswept charging handle.

the sar-3 = 5.56 x 45 calibre. this is a romanian bastard that is built for the export market by using a bulgarian bolt and barrel/gas block. this can be identified (in MOST, but not all cases!) by the 90° bulgarian gas block.