Subscribe to Discovery! | http://www.youtube.com/subscription_center?add_user=discoverynetworks A famous U.S. sniper vets his fully spec'd out HK 416 full auto military rifle. Will the gun work after being immersed in water, dirt and sand? | For more Sons of Guns, visit http://dsc.discovery.com/tv/sons-of-guns/#mkcpgn=ytdsc1
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