Colt 20" A4 556 Upper Receiver Barrel Assembly

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Asked by: Mike Zavori - 5/27/2020

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Asked by: Joeypounds - 6/15/2020

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Asked by: Peter Clark - 5/2/2023

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Accepted Answer

A: Colt has gone to their cage code on their receivers. Colt no longer marks their FSB's with an "F" as they are all flattop rated now.

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Answer provided by: Grant (5/28/2020)

Accepted Answer

A: Yes.

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Answer provided by: Grant (6/17/2020)

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A: Yes it is.

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Answer provided by: Grant (5/2/2023)

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