gumsmiff

A little late to the party here, but I had the same issue too. I manufactured a post-sample MKIII that would reset after each round in the full auto position. I increased the spring tension against the sear lever with a stronger trigger spring and that got me up to 3-5 round bursts followed by a reset. I finally fixed my issued by drilling and tapping a bolt into the trigger housing that supports the sear lever in full auto position. Since this is a post-sample with surplus guts and not an original, I have no qualms about drilling and tapping. Now it will run through a whole magazine with no stoppages.