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Echo1USA Tech Video - Tighten M4 Barrel

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Published on Sep 14, 2009

http://www.echo1usa.com

Does your M4 have the dreaded "barrel wobbles." No need to worry, just check out this easy instructional video on how to tighten up your barrel from the Echo1USA Tech Video Series. With a few simple steps you can have your gun feeling like new again.

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