was derived from the R-27, the only major change from the original being a slightly extended fuselage. Prototypes of this missile were allegedly completed in 2000. It is suspected that a modified subvariant of this missile was then sold to the Iranian Military in 2005 under the designation BM-25 "Khorramshahr". Operators The Soviet Navy was the only operator of the R-27. Iran Operates the Khorramshahr, a heavily modified design based on the R-27. North Korea possibly operates the Hwasong-10, a modified variant of the R-27, some sources suggest North Korea might have abandoned development of the design due to its complexity. See also Hwasong-10, based on the R-27 Khorramshahr based on the Hwasong-10 References External links R-27 (Globalsecurity.org) R-027 Military equipment introduced in the 1960s