There are 2 kinds of semi-autos ....the Inertia guns ( Benelli and others ) ...and gas operated ( Beretta, etc )....
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The Inertia guns shoot a lot cleaner - and in general are easier to take care of.
But today's gas operated guns are pretty good as well.
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Cleaning procedures on all pumps and semi-autos are about the same ...take off the barrel -- remove the bolt assembly -- and remove the trigger group...clean, lube and reassemble everything ....
To do that on most pumps or gas guns will probably take 20 - 30 min...
On a Benelli - its a little faster - maybe 10 - 15 min...
After you do it a few dozen times -you get quicker...
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