The BM-14 can fire rockets fitted with chemical (MS-14), smoke (M-14D) or high-explosive fragmentation (M-14-OF) warheads. It is similar to the BM-13 "Katyusha" and was partly replaced in service by the 122 mm BM-21 Grad.
The rocket has a range of about 9.8 km and can carry a warhead of 8 kg weight. Launchers were built in 16 and 17-round variants.
The weapon is not accurate as there is no guidance system, but it is extremely effective in saturation bombardment.
The Type 63 130mm multiple rocket launcher (not to be confused with the towed Type 63 of 107mm) is the Chinese version of the BM-14-17. It has a slightly smaller calibre but is fitted with 19 instead of 17 launch tubes. The Type 63 MRL is based on the Nanjing NJ-230 or 230A 4x4 truck, a licence-produced version of the Soviet GAZ-63/63A.
The WP-8z (Polish: Wyrzutnia Pocisków rakietowych) was a Polish towed rocket launcher that was developed in 1960. The weapon was subsequently produced between 1964 and 1965. It fired the same rockets as the RPU-14 but had only 8 launch tubes. The main operator was the 6th Pomeranian Airborne Division (Polish: 6 Pomorska Dywizja Powietrzno-Desantowa). with 12-18 WP-8s in its inventory.