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Old February 18, 2013, 07:02 AM   #7
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Join Date: February 11, 2012
Location: Williamsburg, Va.
Posts: 1,286
Choke tubes are removable choke "tubes" that screw into the muzzle end of the barrel to control constriction. Most new guns come with them these days, and they can be retrofitted as well. They increase flexibility. A gun usually comes with a set and don't shoot without them in the gun, because the remaining barrel wall is quite thin and easily damaged, and the threads will get gunked up with powder residue or plastic.
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