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How much lighter are they then the OEM part — 5 Answers

by don, from MI, United States Asked on July 14, 2019

Name SIG SAUER Factory Replacement M-LOK Handguard for M400 TREAD (4.9)
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Answered by Ethan C., Gear Expert, from IL, United States, on September 19, 2019

It isn't really any different in weight, it just has more mounting points and a different appearance.

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Answered by DROE, member, from MI, United States, on March 23, 2020

Received the 15 inch version today and weighed both. The 15 inch lightweight rail is 6oz lighter then the factory rail.

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Answered by Will, guest, from NC, United States, on March 30, 2020

According to the Sig Tread Accessories video on the Tread website the 13 inch is 45% lighter and the 15 inch is 40% lighter.

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Answered by Corey, guest, from PA, United States, on December 14, 2019

I would assume it is roughly 30% lighter since it is skeletonized the full length of the hand guard instead of just over half the length like the factory default guard.

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Answered by usmcjg, member, from TN, United States, on January 17, 2024

The 13” version I bought is about 8 ounces lighter than stock.

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