Ever since I was a wee-lad, Half-Life's shotgun having a single barrel but secondary fire firing two bullets at the same time made no sense to me. So, after replaying Black Mesa and LambdaVR for Quest, I decided that enough is enough and made this utter terrible edit. Gauge? Who cares. Now it has two barrels and secondary fire will make sense. As you can see from screenshots, model is for SD models, not the Gearbox HD models. Might make a Gearbox version if this gets liked enough by the community :)