The Zastava M93 Black Arrow rifle is available in both
12.7×108mm and
.50 BMG. It is a
bolt-action, air-cooled,
magazine-fed firearm with a
fixed stock. The weapon is fed through a 5- or 10-round detachable, spring-loaded box magazine. The shoulder stock has a telescoping design, with two stiff springs Its overall design is a scale-up of the
Mauser 98 system, similarly to the
Mauser 1918 T-Gewehr, with some influence from the French
FR-F1. The FR-F1 was developed primarily from the MAS-36, which itself was influenced by the Mauser; thus, the Black Arrow derives the majority of its features from the Mauser design and its French iterations. 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, scaled up to
12.7mm caliber. This simplifies the manufacturing and disassembly process, while retaining the famed reliability of the original Mauser design. The M93 has a trigger block
safety design similar to the Russian
SVT-40 semi-automatic rifle; the same design is used by the FR-F1. Versions sold on the civilian market, particularly in the United States, have a Picatinny rail over the receiver instead of an included scope, 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. ==Users==