Red Dot Arms Forum

Full Version: AR-15 failed to cycle
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Just got my AR-15 back from the mfg (ATI). When I bought it back in January, it shot one magazine, then failed to cycle any rounds.

Cause: the gas block had moved too far forward, causing the gas port hole and gas tube hole to misalign.

They installed a new gas block.

Works like a charm now! Yippee!