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do I need to change my gas block with this rail — 1 Answer

by brown, from UT, United States Asked on September 8, 2022

Name Geissele USASOC AR15/M4/M16 Upper Receiver Complete Group (4.4)
$1,579.99 $1,479.00 Save $100.99
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Answered by Ethan, Gear Expert, from IL, United States, on September 19, 2022

The Geissele Usasoc AR15/M4/M16 Upper Receiver Complete Group is a complete upper receiver that includes a low profile gas block with the Geissele Super Modular Rail. There is no need to change the gas block.

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