Her gun has cool design, sucks that the wielder is portrayed as bad at using guns (although it's just a quirk that not favor her to use guns normally) but great at Close Quarters Combat.

2 inches will probably snap her wrists if she fully unloads that thing. It's likely that the barrel itself is a proper muzzle brake, meant to reduce the initial kick of the .357 round she's firing off, increasing the accuracy of weapon to its, now much shorter, effective range.