Went to the range today and a reoccurring problem started again today after about 100 rounds. At times it will not feed from the mag or not feed the round all the way. When it first started I figured it was the factory mag I bought some "better" mags. No change. So I bought some Magpuls. Again no change. Started buying better ammo (Remington, Fiochi, and others) No change either. Thought maybe I didn't clean it well enough so I got educated and became very meticulous with my cleaning. No change. Not sure what to do. Any help will be appreciated.