Well, it's not bad, it just was strange.
Hasbro didn't really make a complete holster... They made one that's kind of open on the back, and you slip the blaster barrel through a notch in the holster at the top, and it was to sort of stick there in the holster (the back of the holster's sort of "molded" like the blaster barrel... Hard to explain). The end result is that the rifle sorta sticks out if you have it holstered, but it's really not terribly noticeable. Why Hasbro didn't just make a compelte holster with a "back" on it, or a "sleeve" that covers the entire gun barrel (ala any other holster they've done), I do not know. It's completely possible that it can be done, they just were trying something different it seems.
It's really hard to explain it, without a picture. If someone knows of one showing what I'm talking about I'm sure they'll link you.
It's the figure's only drawback in my eyes. I can get my Stormies to sit fine, kneel, run, die, lunge, stand at attention with guns up, down, or arms at their sides... It's simply a great figure to me. As close to perfection as Hasbro has ever acheived I think.