I like the SA80

[bigduke6]

Is it one of the specially made "SA80's" that fire a laser or light beam and is/was used for training purposes?

No, the one you refer too was or is part of an indoor range, (forget the real name) I recall spending most of the day out side waiting to go in than actual time on the range due to the operating system (not the weapon) the weapon operates and functions like the real deal.

The rubber ones I think are for displays or recruiting stands etc......