Failure to feed

[9mmrevolver]

So I took my cmmg lr308 platform out to reno this weekend to shoot some 1k targets. My mag pull mags ran flawlessly but my dpms mags wouldn't feed. Both 20 rounders. Is there anything I can do to make then run more reliable. It seemed a bit sluggish when using that mag. By the way. Shooting prone with 20's or 10/20's sucks. The only gun related purchases I made in Reno was a pelican case and a 10/10 magpul mag.

[curtru]

Its probably the mags maybe the spring is to weak to feed.

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[9mmrevolver]

I would have figured it would have been the lips

[ja308]

Maybe try some machinist blue or lamp black on the lips and see if you can determine the hang up .
FWIW I've tried to adjust feed lips a few times and never succeeded in correcting the problem .