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On Roscos website it says their 13.9 is carbine length gas system. Are these actually mid length or are they carbine length? Are these barrels dimpled — 2 Answers

by King, from CA, United States Asked on June 22, 2022

Name Rosco OPMOD Bloodline 5.56mm Nato 13.9in Threaded Barrel (4.9)
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Answered by Ethan, Gear Expert, from IL, United States, on July 11, 2022

The Rosco OPMOD Bloodline 5.56mm Nato 13.9in Threaded Barrel features a mid-length gas system 0.750" diameter. They are not dimpled from the factory.

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Answered by Jason Edwards, member, from SC, United States, on January 13, 2023

My rosco 13.9 bloodline was dimpled from the factory.

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