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What is the inside diameter? — 3 Answers

by Raul Pailla, from AZ, United States Asked on January 27, 2023

Name Sharps Bros. Full Top Rail M-LOK Handguard (5)
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A
Answered by Hunter, Gear Expert, from OH, United States, on September 25, 2023

The Sharps Bros. Full Top Rail M-LOK Handguard has a diameter from top to bottom is 1.781" and from side to side is 1.365".

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A
Answered by colin, member, from MA, United States, on October 11, 2023

if you are by chance wondering if it fits the superlative arms piston kit, I can confirm it does with the .750 gas blocks

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Answered by JD, guest, from NH, United States, on September 23, 2023

1.365” according to the schematic on the product page

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Last updated 2025-11-12 UTC.