Simplon  Suggested by donshottype 

Letters and numbers in a stamping machine which, AFAIK have not been made into a font.
This style of letters and numbers is found in assorted fonts but I have not spotted any single font with a match for all of them. To reproduce the text in the image -- without font editing -- you would have to pick and choose from several fonts.
Simplon is perhaps closest for most of them.
Check out the similar fonts shown at Identifont for the others
http://www.identifont.com/find?font=Simplon&q=Go
Most of them are less expensive than Simplon, which seems to be sold only on a package basis.
However, if you qualify as a student, there is a large discount for Simplon.

This might be from a reproduction Cold M4A1 Carbine used by movie makers etc. In which case the letters and numbers are fixed rather than sequentially stamped as in the original Carbine.
See:
http://www.deactivated-guns.co.uk/deactivated-guns/modern-deactivated-guns/colt-m4a1-carbine-plug-firer-/prod_2183.html?review=write