Yankee hill frontsight gas block question

[aghauler]

Anybody know if these will work with a Wilson HBAR barrel?

Thinking of moving the stainless barrel from the A2 upper to a flat top upper.

[m16]

Which barrel do you have exactly?

If it's the same HBAR I'm thinking of, it is 0.750" at the gas block.

The YHM will work, if that's the barrel you have.

[aghauler]

Which barrel do you have exactly?

If it's the same HBAR I'm thinking of, it is 0.750" at the gas block.

The YHM will work, if that's the barrel you have.

One of those "pre Ban" heavy BBLs without flashhider, I think it's straight contour, but have to pull the handguard off to confirm.

[m16]

That barrel might be 0.936" at the gas block, if that's the case then that gas block will obviously not work.

[aghauler]

Had eye surgery yesterday so thought taking measurements and posting would be good "therapy" as long as I can't go shooting fer awhile.

Does this help? I got this UPPER back in the "Ban Days" but want to change from the FK A2 Upper to a Flat Top UPPER receiver.

Looks like that Yankee hill gas block should be good to go, I think.

[m16]

Yep you are good to go, that barrel will accept any standard gas block.

[aghauler]

Yep you are good to go, that barrel will accept any standard gas block.

Great thanks for the help!