[CanisLupus]

Pic #1 is a 40mm grenade launcher...Mk40 i believe

[FreedomPoster]

See post #10, and my replies to same.

[FreedomPoster]

P.S. - I know what a MK19 looks like.

http://www.fas.org/man/dod-101/sys/land/mk19.htm

[Prodigal Son]

Pic #1 is a 40mm grenade launcher...Mk40 i believe

I think it's a MK-19. Awesome weapon. Particularly when combined with 50 Cals. Our platoon had 6 Mortar Tracks. 4 carried 50s and two carried MK-19s. Combined with the six 4.2" Mortars and the personal weapons- that's a lot of fire power.