The LASM (M72A9) is from the same family as the current 66 LAW (M72A5 - L12A1 for UK) and old 66mm LAW (M72A3). The main difference is the warhead. The LASM contains about 1Kg of an enhanched blast explosive, wheras the LAW contains about a third of a kilo.
Its capabilities vary depending on the target, unfortunately they can't be discussed on an open forum.
The Yanks may refer to the LASM as a LAW (Light Assault Weapon).
Thanks chaps. Not after techical specifics, just a brief overview/heads up. Though it looked similar to the 'ol 66. Hopefully using this on compund walls is proving safer than sawing a bar mine in half