AR15 Gas Block Alignment Tool

>> YOUR LINK HERE: ___ http://youtube.com/watch?v=V4f9stp4SWE

Demo by HB Industries on how to use our AR-15 and M16 Gas Block Aligner tool. These precision molded pins insure perfect alignment between the gas port on your AR-15 barrel and any gas block. Available at http://hbindustries.net/products/ .

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