If you want to watch both, Aliens and Cowboys is a great movie. Have you watched the "Walking Dead" on the A & E Channel it is starting its 3rd season in July.
How about Die Hard with Vengence.....it's got alot of action and "shoot 'em up" all the way through!
Sorry.....actually it's the last in the Die Hard series....Live Free or Die hard. Very good!
I watch alien surf girls. Sometimes
Aliens is very hard to beat; however.... Bladerunner not exactly shoot em up, but has some shooting !! Classic!!