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Am I correct is thinking it can only be attached to a PISTOL BRACE LOWER? Or it needs a SBR FEDERAL TAX STAMP PERMIT(or whatever that is called) — 2 Answers

by charlie, from LA, United States Asked on July 26, 2020

Name COLT LE6921CK UPPER KIT 5.56 14.5 (3.3)
$1,049.00 $869.99 Save 17%
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Answered by Branko, member, from FL, United States, on December 25, 2022

You can buy it and take it to any gunsmith to pin and weld that muzzle device or another of your choice and you can put it on a carbine/rifle lower because the overall length will be slightly over 16” depending on which muzzle device you go with

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Answered by Shane Arellano, member, from OR, United States, on November 21, 2021

pretty sure that is 100 percent correct .

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