The Mortier de 81mm léger long renforcé (LLR 81 mm) is a mortar used by the French Army. It is the latest iteration of the TDA 81 mm light mortar family, introduced in 1997.
The original TDA 81 mm was designed in 1961. Since then, three variants have been fielded:
- the 81mm LC (Léger court, "light short"), with a 1.15-metre barrel;
- the 81mm LL (Léger long, "light long"), with a 1.55-metre barrel;
- the 81mm LLR (Léger long renforcé, "light long reinforced"), paratrooper version with a 1.55-metre barrel.
- The LLR 81mm is composed of a base plate, a barrel comprising the breech, and a bipod. It can use the same pointing optics as the MO-120-RT-61.
The LLR 81mm is a paratrooper weapon, which can be parachuted either piece by piece, in a kit comprising a dismantled weapon and ammunition, or in larger crates comprising several weapons. The barrel was reinforced as to allow firing of all 81 mm mortar ammunition in existence.