Changing the hand guard doesnt require you to change the gas tube. If you're using the same barrel then the same gas system is the same. If you're changing the barrel then you'll need to know which gas system length the new barrel uses. If it's different from what you currently have then purchase accordingly.
This gas tube is 15 1/8".
The intermediate length ODIN Works Gas Tube is between a mid and rifle length gas tube and is 13.25" long. If you wanted to find more information, I would recommend reaching out to the manufacturer. You can find their contact info linked below:
https://www.odinworks.com/Contact_Us_a/83.htm
If you are referring to the gas block journal size, please contact the manufacturer directly for more information.
Yes. The ODIN Works Gas Tube will fit and function with your M&P 15 sport II. Ensure you select the correct length (mid length).
MPN:GT-ML
Yes. The carbine length ODIN Works Gas Tube will fit and function on your rifle. MPN:GT-CARB
Yes, it will. From what I could determine, Faxon only offers one 11.5" Gunner barrel and it uses a mid-length gas system so you would need the mid-length gas tube under MPN:GT-ML.
Please email us at techsales@opticsplanet.com for further assistance as we will need more information about your barrel.
Yes, mine came with a ~.400" pin. Fit a Faxon gas block perfectly.
Depends on whether you have a carbine or mid length gas system. Barrel length varies either way.