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5/12/2008 7:42:18 PM EDT
Are there metric barrels and inch barrels or are they interchangeable? Thanks!
5/13/2008 5:20:52 AM EDT
[#1]
Threads are the same.  The inch style uses breaching washers to time the barrel while the metric is shoulder to receiver.

The barrels are interchangable, however, some of the things that attach to the barrel are not.  Like the gas system for instance.

Interchangability of parts

Scroll through the treads and read what you need.
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