AG-043 (АГ-043) was a Soviet compact fully automatic assault rifle or carbine chambered for the 5.45×39mm round, developed in 1975.

[1] The weapon is a derivative of the earlier and similar AO-31 which also is Simonov's adaptation of the AK-47.

The AG-043 had folding stock; a version with fixed stock was given the designation AG-042.

Both were designed by Simonov after the GRAU launched Project Modern intended to adopt a carbine capable of automatic fire, inspired by the US experience with XM177 in Vietnam.

The Soviet contest for this design was won by Kalashnikov's AKS-74U.