"The Twilight Zone" Mystery Rifle

[sheepherder]

There's a Twilight Zone marathon on this weekend on cable's SyFy channel...and the always popular & classic episode "Two" was just on...

Twilight Zone "Two" (TV episode 1961)
Directed by Montgomery Pittman. With Elizabeth Montgomery, Charles Bronson.
www.imdb.com/title/tt0734686/

(BTW: Montgomery looks really hot in this episode!)

Two survivors of an apocalyptic battle, a man and a woman from each opposing sides, approach each other suspiciously.

What is Bronson's rifle??? This is not a quiz; I don't know...

Excuse the quality of the screen grab...

(I actually watched this episode when it first aired...in 1961...)