From the TV show Wanted Dead Or Alive. That cut down rifle used by Josh Randal (Steve McQueen).

Oh yea I think it was a sawed off .44 Winchester. Wicked looking close quarters rifle!

I think in one episode, they said 30 caliber (if I remember right) while I was reading that the ammunition he carried was 45-70. That was to make it look more impressive on tv.
But no matter.. I would love to get my hands on one of those.

From any movie!
Mine is from 1986 Aliens,
I'd like ya to meet a close personal friend of mine...
The M41-A Pulse Automatic Rifle
10mm explosive tip caseless
With 40 mm Over and Under 12g Grenade Launcher.....Man when they come out,I want one!!!!

.50 cal M2 from just about any Army movie.

The tiny little hand held thing Will Smith used in Men in Black.

The EM-1 Rail gun from the film Eraser (1996)



The TSR 66 from Robocop (2014)



If anyone is interested there is an Internet Movie Firearms Database
http://www.imfdb.org/wiki/Main_Page

While looking for a decent image of the TSR 66 I saw a lot of movie gun designs there that I like. Too many to list, actually.

The Auto 9 is a highly advanced select-fire machine pistol with a 50-round magazine. It is holstered in a concealed alcove in RoboCop's thigh, together with at least one reload magazine in storage. The most commonly utilized fire setting is in a three-round burst mode; however, RoboCop has been seen firing a single round

Mowtown, what up!

I got to fire one of these, 4 rounds....with silicone ear plugs and gun muffs, my ears were ringing...BOOM BOOM BOOM BOOM! Las Vegas....you can do anything there!

Perhaps a little bit out of topic .. and not serious enough .. but works on every guy as the most powerful weapon ..

I also like the Heckler & Koch HK417 from Jurassic World (2015)