Stop saying "long gun"....
It's like the writers think they've learned the proper terminology, so they want to use it over and over. The characters sound ridiculous.
The wife says something like "Bob Lee, if he's killed with a long gun they'll know it was you". Seriously??? First, no one talks like that, or uses the terminology in that way. Second, how in the world would they know it was Bob Lee??
As if that wasn't stupid enough, BobLee says "My dad was killed by a sniper on the long gun". Would that be opposed to the sniper that uses a handgun??
Stop using terms because you wrongly believe they're correct and sound "cool".