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Will geissele mk4 handrails fit in this upper recover or is some machines required — 1 Answer

by lk, from NY, United States Asked on January 12, 2022

Name Sharps Bros. Upper Receiver Ar-15 Billet W/dust Cover (4.2)
$214.95 $198.83 Save $16.12
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Answered by Sharps Bros, Manufacturer from OR, United States, on June 15, 2022

The rear facing tabs on the Mk4 handguard would likely interfere with this SBUR03 model. The Sharps Bros SBUR04 upper will fit the MK4 just fine.

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