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Just bought the SigM400 .300BLK barrel, should i order mid length or carbine gas tube? — 1 Answer

by Joel, from NY, United States Asked on February 22, 2021

Name Aero Precision Melonite Gas Tube (4.8)
As Low As $18.99
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Answered by Armando R., Gear Expert, from IL, United States, on March 17, 2021

You need to confirm what gas system length that barrel uses. If its 300 Blackout, it likely uses a pistol length gas tube, but it is dependent on the barrel itself. You will need to confirm this specification or you can email us with the exact part number or link and we can try to confirm.

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