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![FAIL ZERO - NITRIDE 9MM BCG FAIL ZERO - NITRIDE 9MM BCG](https://cdn11.bigcommerce.com/s-ve6rdd5n1f/images/stencil/300x300/products/3800/17862/FZ-9MM-NITRIDE-BCG_1_HR__93571.1629836770.jpg?c=2)
This is a Semi-Auto/Full Auto M16 bolt carrier group made with MILSPEC 8620 quality steel on KE Arms' in-house CNC machines. It is heat-treated and Black Nitride coated. Sharp edges and rough finishes eliminated.