Yeah, why not?
The weapon has an appreciated 40 hexes single shot range. The damage highly depends on the target's DR, above 75 DR the damage dealt is under .223 pistol for aimed shots and XL for hexing, it's better on lower DR though. The AP cost is 4 for a single shot, same as all two handed weapons. The bypass damage is a bit under what plasma rifle does.
The weapon may be semi tier 4, it's overall performances are outclassed by good statted tier 3, but remain better depending on situation. It's the only assault rifle that can be used on single shot for damage dealing, so why not adding it to hinkley?