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Can this upper this upper go on my ar10 308 lower? — 2 Answers

by B-rock, from IN, United States Asked on July 15, 2018

Name Radical Firearms 16 in. 458 SOCOM Upper Assembly (2.7)
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Answered by charliemac10, member, from CO, United States, on July 22, 2018

458 socom ar's are made for the ar 15 platform. Same magazines and lower parts. THe only differences is the bolt, barrel and an enlarge ejection port.

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Answered by JimUK1960, member, from WA, United States, on July 22, 2018

No, the .458 SOCOM is based on the AR15 platform. The upper is a modified AR15 upper. The modification is an enlarged ejection port to allow the larger case to be ejected.

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Last updated 2025-11-12 UTC.