What kinda gun is this?!

[Panzer1509]

:scared:

 

[Narh]

Experimental Machine gun that was being worked on i the 50's. Olin rifle I think.

 

[Raul Tha Monk]

I have no idea looks fake

 

[Sexy Beast]

Experimental Machine gun that was being worked on i the 50's. Olin rifle I think.

Pretty much:

http://en.wikipedia.org/wiki/Olin/Winchester_Salvo_Rifle