Automatiskgevær 81

Automatiskgevær 81
The original Automatiskgevær 81 featured a metal, fixed length, folding stock and a two piece plastic handguard. It also featured a dovetail mount for optics, issued one per section as an ad hoc marksman's rifle. It was also produced in a shorter variant for vehicle crews and specialist forces designated the AG.81K. (K standing for "Kort", the Norsk for Short.)

Automatiskgevær 81-04
The AG.81-04 was introduced in 2004 and features a series of improvements aimed at increasing reliability and making the rifle more ergonomic. It also features a monolithic optics rail and quad-railed handguard. The AG.81-04 also saw the introduction of a universally issue optic in the form of a red dot sight, issued with every rifle, accompanied by a magnifier in some units. It was also produced in a shortened form, the AG.81-04K

Automatiskgevær 81-17
The AG.81-17 stemmed from modifications made to the AG.81-04 by the HSK, notably the front rail being replaced with a smoother type and a fully adjustable folding stock, these rifles have since been officially embraced by those units and plans have been laid out to equip at least the units of the Jeger Corps with them, they will however undergo further work first to ensure they're fully compatible with the new bimetallic cased cartridge.