Who makes a ar10 '338 federal upper ?260

I have an ar10 ,in 260 Remington and would like a 338 federal upper for that gun .It has a dmps lower .I think.this would be an awesome gun combo !

The only reason I see for a .338 Federal it stuffing it in an AR-10.

I think Rock River has one as a standard production upper. Might be worth checking out.

Google

DPMS makes a run of them from time-to-time, but they have been spotty on QC - rough chambers, over-gassed, etc.

Wilson Combat just brought out a number of barrel in the .308 sized-calibers this Fall.

But, they (WC) are showing a number the AR-10 barrels with a max length of 18 inches.

I think the biggest trend is to buy an upper, and get the barrel separate to assemble the configuration that you want.