M242 Bushmaster
Videos
The M242 Bushmaster chain gun is a 25 mm single-barrel chain-driven autocannon. It is used extensively by the U.S. military, such as in the Bradley fighting vehicle, as well as by other NATO members a
U.S. Army press photo of a M242 Bushmaster
Close up of the MK 38 naval variant
An enhanced M242 with a fluted barrel on an M2 Bradley (the top-mounted metal box and spotlight are MILES training attachments, not part of the gun system).
M793 target practice with tracer (TP-T) rounds for the MK-38 being inspected
25 mm caliber
Videos
25 mm caliber is a range of autocannon ammunition. It includes the NATO standardized Swiss 25×137mm, the Swiss 25×184mm, the Soviet 25x218mmSR, and the Chinese 25×183mmB.
M242 Bushmaster
…The M242 Bushmaster chain gun is a 25 mm (25×137mm) single-barrel chain-driven autocannon. It is used extensively by the U.S. military, such as in the Bradley fighting vehicle, as well as by other NATO…
Japanese 25×163mm ammunition from a post-war US technical manual