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Old 02-03-2013, 12:01   #2
Dungeon Schmuck
Join Date: Dec 1998
Location: Indianapolis, IN
Posts: 6,922
The outer diameter of the factory .40 barrel is greater than the OD of.the factory 9mm barrel. The conversion barrels have the 9mm bore with the OD of the.factory .40 barrel.
Samurai Rabbi
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