• @PugJesusOPM
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      1314 hours ago

      Two barrels, but instead of side-by-side, it’s one barrel on top of the other.

      • @ChicoSuave
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        512 hours ago

        Explanation: when aiming down iron sights, side by side means compensating a little left or right, based on which barrel is shooting. Over-under means aiming once and having 2 shots ready to hit the same location.

        Holding an over-under is also easier as it is a single barrel width (perfect handsome) vs the broader handle of the side by side. This makes wielding and aiming the two guns fairly different.

        Over-unders are considered preferable for these reasons.