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what type of steel is the barrel — 1 Answer

by nathan, from GA, United States Asked on May 10, 2022

Name Radical Firearms Complete Upper Assembly 16in 6.8 SPC II w/ A2 Flash Hider (5)
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Answered by Ethan, Gear Expert, from IL, United States, on June 27, 2022

The Radical Firearms Complete Upper Assembly 16in 6.8 SPC II w/ A2 Flash Hider features a 4140 Chrome Moly Vanadium, Medium Contour Profile barrel. It has a 1:11 twist.

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Last updated 2025-11-12 UTC.