In Serbian military service, it was issued with a ZRAK 8x56 optical sight (8x magnified 56mm scope with markings up to 1,800 m (2,000 yd)),[6] which was essentially a scaled-up version of the scope issued with the smaller Zastava M76.

The front end of the M93's bolt closely resembles the Mauser design, while the back end and firing pin are essentially the same design as the FR-F1's bolt,[6] scaled up to 12.7mm caliber.

This simplifies the manufacturing and disassembly process, while retaining the famed reliability of the original Mauser design.

Versions sold on the civilian market, particularly in the United States, have a Picatinny rail over the receiver instead of an included scope,[6] allowing purchasers of the rifle to mount the optic of their choosing.

Originally chambered in the Soviet/Eastern Bloc 12.7x108mm cartridge, an optional chambering in the American .50 BMG (12.7x99mm) heavy machine gun round was later developed for the export market, as 12.7x108mm is rare outside of former Soviet nations.