I was under the impression all Glock 17 barrels were 4.9"
Is this a misprint by Bud's?

Question

James G. · Answer

Hi Keely, the G17 standard barrels have always been 4.49". The 10mm and 45 full size Glock standard barrels have always been 4.6 inches.

Michael L. · Answer

Glock web site shows Barrel Length:
114 mm / 4.48 in.

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