The BM-14 (BM for Boyevaya Mashina, 'combat vehicle'), is a Soviet-made 140mm multiple launch rocket system (MLRS), normally mounted on a truck.

The weapon is not accurate as there is no guidance system, but it is extremely effective in saturation fire.

[4] The M-14 series consist of three known types: During the Syrian Civil War, a rocket engine from a 140 mm M-14-series rocket was identified on 26 August 2013 by the U.N. fact-finding mission in the Muadamiyat al-Sham district southwest of Damascus, allegedly originating from the chemical attack on Western Ghouta on 21 August 2013.

The bottom ring of the rocket engine had the lot number "Г ИШ 4 25 - 6 7 - 179 К" engraved,[6]: 21–22  which means it was produced in 1967 by factory 179 (Sibselmash plant in Novosibirsk).

[8]: 43–45  On 18 September, the Russian Presidential Chief of Staff Sergei Ivanov commented on the U.N. missions findings.