MSS-1.2

MSS 1.2
The missile fired in 2022
Type	ATGM
Place of origin	Brazil
Service history
Used by	Brazilian Army
Production history
Designed	1980s
Manufacturer	SIATT
Specifications
Mass	15[1] or 15.2[2] kg (missile) 24 kg (missile + launch tube)[1] 28 kg (firing unit)[1] 52 kg (total)[1]
Length	1.38[1] or 1.52[2] m
Warhead	HMX in a non-tandem shaped charge HEAT warhead (at least 500 mm RHAe penetration, see #Penetration)
Engine	Two-stage engine[2]
Propellant	Two-stage solid propellant[2]
Operational range	At least 2,000 m, see #Range
Maximum speed	274 m/s[2]
Guidance system	Laser-guided semi-automatic command to line of sight
Launch platform	Two-person infantry crew or vehicle-mounted

The MSS 1.2 AC (Portuguese: Míssil Superfície-Superfície 1.2 AntiCarro, Surface-to-Surface Missile 1.2 AntiTank)^[3] is a Brazilian anti-tank guided missile (ATGM). Operated by infantry or vehicles, the system consists of a reloadable launch tube, laser-guided missile and firing unit, as well as a simulator and testing equipment. It was developed out of Oto Melara's “Missile Anti-Carro della Fanteria” (MAF, Italian: Infantry Anti-Tank Missile), which was rejected by the Italian Army. Brazilian involvement began in 1986 and it has since then been tested and redesigned by the Brazilian Army's research institutes and a series of Brazilian companies (Órbita, Mectron and SIATT).

Development has taken decades. A prototype was approved in 2004 and the first pre-series models were delivered to the Brazilian Army and Brazilian Marine Corps in 2013–2014. As of 2023 there was no serial production, final reports or distribution to operational units. The Guyana–Venezuela crisis compelled the Brazilian Army to hasten half of its stock of 50–60 missiles into service, and the pilot batch was finally homologated in June 2024. The anti-tank missile sector, which the MSS 1.2 intends to fill, is still undeveloped within the Brazilian Army.