I have also seen a few photos of the M60 m/g where the barrel was shortened
I can't even imagine cutting a pig barrel down, she what I carried when I was in the SEABEES.
Veteran US Navy Seabees - US Army Corps of Engineers - American Legion Post 0867
" Only two defining forces have offered to die for me. 1.) Jesus Christ 2.) The American G.I. "One died for your soul, the other for your freedom! "