I have extended experience with the M-79 and the M-203, including in combat. The M-79 was simple and lightweight, but dangerous due to the inadequate safety. Most experienced grenadiers kept the action broken and usually did not carry a round in the chamber. The other drawback was that the secondary weapon with the .45. The M-203 was safer and the M-16 was the secondary weapon. It was a little clumsy and took longer to load. Grenadiers needed longer to become accurate with the M-203.
I have never fired the M-320, but I have dry fired it and have had extensive discussions with current gredadiers. I like it. I think that in most situations, I would sling my M-4 across my chest and use the M-320 as the primary weapon in a stand alone mode.
Per my post, I never considered it anything close to being an adequate killer. I have also used the prehistoric M76 grenade launcher firing the M26 frag grenade: now THAT was a killer!
oh..and the M-79 would spray a bag of rice quite well....but the willie pete would cook it to a crisp.....
centurion316 wrote: “I have extended experience with the M-79 and the M-203, including in combat. The M-79 was simple and lightweight, but dangerous due to the inadequate safety.”
I’ve known several Vietnam company commanders who refused to issue the M203 to their troops. They preferred the M79 since it was their experience that their gunners would fire the one round in the M203 and then go full rock and roll with their M16. Refusing to issue the M203 ensured their gunners would continue to provide grenade fire.