OFS 13 round

OFS 13 is a Russian 120 mm high-explosive mortar round reported by Defense Express as one of the ammunition options for the 2S40 Floks, with a cited mass of 17.3 kg and a reported 8.5 km range from that system.

OFS 13 round, 120 mm high-explosive mortar round, Munitions

Image source: 40th Cavalry Regiment soldier loads 120 mm mortar round 120208-A-ZU930-014.jpg

Profile

Origin: Russia
Built by: Russian ordnance industry
Type: 120 mm high-explosive mortar round

mortar artillery he indirect fire

Specifications

Caliber: 120 mm
Weight: 17.3 kg reported by Defense Express
Maximum range: About 8.5 km when fired from 2S40 Floks
Munition type: High-explosive mortar round
Compatible weapon: 2S40 Floks 120 mm wheeled self-propelled howitzer/mortar

Firing Weapons

Defense reporting lists OFS 13 as a firing option for the 2S40 Floks and gives the round a reported range of about 8.5 km from that system.

Firing weapon

Weapon type

Firing evidence

120 mm wheeled self-propelled howitzer/mortar

Defense Express explicitly lists the 2S40 Floks as firing the OFS 13 round and reports a range of about 8.5 km for that ammunition option.

Sources: New Russian 2S40 Floks Howitzer Just Delivered, Next Day First One Gets Hit in Ukraine

OFS 13 round Images

OFS 13 round, 120 mm high-explosive mortar round, Munitions - view 1 — Source: 40th Cavalry Regiment soldier loads 120 mm mortar round 120208-A-ZU930-014.jpg

OFS 13 round, 120 mm high-explosive mortar round, Munitions - view 2 — Source: Defense.gov News Photo 050426-M-9019H-006.jpg

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Sources

New Russian 2S40 Floks Howitzer Just Delivered, Next Day First One Gets Hit in UkrainePublisher: Defense Express | Note: Supports the reported OFS 13 weight, range, and the claim that OFS 13 is one of the ammunition options for the 2S40 Floks. | Accessed: 2026-06-23 120 mm Mortar BombPublisher: MSM | Note: Supports the general 120 mm HE mortar-bomb class, including the fact that 120 mm mortar bombs can be fired from towed or self-propelled mortars. | Accessed: 2026-06-23 40th Cavalry Regiment soldier loads 120 mm mortar round 120208-A-ZU930-014.jpgPublisher: Wikimedia Commons | Note: Supports image provenance for a public-domain U.S. Army photo showing a 120 mm mortar round. | Accessed: 2026-06-23 Defense.gov News Photo 050426-M-9019H-006.jpgPublisher: Wikimedia Commons | Note: Supports image provenance for a public-domain U.S. Marine Corps photo showing mortar rounds. | Accessed: 2026-06-23