GAT-01A1+AQM/E-X04 Gunbarrel Dagger is a mobile suit introduced in the original design series Mobile Suit Gundam SEED MSV. It is most notably piloted by Morgan Chevalier.

A variant of the GAT-01A1 Dagger (aka 105 Dagger) piloted by the "Moonlight Mad Dog", Morgan Chevalier. The Gunbarrel Dagger mounts the AQM/E-X04 Gunbarrel Striker as a Striker Pack, granting the suit usage of the remote controlled Wired Gunbarrels (which could only be controlled by individuals with high spatial awareness, like Morgan) and perhaps the Striker's Gatling gun, in addition to the Dagger's standard weaponry. The Gunbarrel Striker can be automated or piloted, and if it is the latter, the front section can be detached after the Striker Pack docks to the Dagger's back, which make sense as the unit's pilot is useless after the pack docks with the MS. In fact, this is what Morgan often does if the pack is delivered in battle by a pilot. As the wires of the wired gunbarrels can be easily severed during combat, a backup Gunbarrel Striker is always prepared in advance and send out when almost all the wired gunbarrels have been severed or destroyed.