The new programme from a USA gunsmith is pretty good for anyone interested in the modification of all types of weapons. I enjoyed shooting in the past and this ex-Marine knows the business but I'm a bit lost re.the people who come in to buy such things as silenced shotguns etc. Still it's interesting from an armourers point of view except!!! he has a daughter that has a voice and manner that would demand a burst from a .50 cal! See what you think on Discovery channel.