S&W M&P 15 Sport FIRST SHOTS and sighting in of irons

Went out to Mojave today to shoot my new AR-15. Missed ever single shot with first 10 rounds. Made some adjustments and was hitting 2" groups at 60 yards using only iron sights. Ran 4 brands of ammo, 3 types of mags to test functionality. Rifle ran great and shot great..... 100 rounds 5.56 and .223 and not one malfunction
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