Dawghusker

I have a Springfield MIA. The weapon has been fired about 500 times. Lately, I've been getting about a 50% failure rate on ejecting casings. I think I either have an obstructed gas tube or problems with the bolt-mounted ejector.

I suppose I could take it to the local gun repair guy. Otherwise, does anyone have a suggestion as to how I might try to repair it at home?

Thanks