M1 Garand and 1911 Colt
The one I was issued was definitely first generation (1988). I never had issues as long as it was lightly oiled. Run it dry = problems. I admit I never tried to run it in a desert environment but did have it with me during deployments to Korea in the Winter and some nice government funded vacations to Central America.So the M249 1st gen is not a good weapon!
Strange the Belgian M249 seem to work ok when
I was hanging out with them.
I dare you to get 100 RDS though a 1st gen M249 without a malfunction.
2nd gen maybe 400 RDS !