Diamondhead does not specify where these are manufactured, please contact them directly for further assistance.
Springfield, Massachusetts and dammit I don't really understand why Diamondhead doesn't beef up their Handguard manufacturing. Them and Strike are the ONLY handguard out there that has any integrity real originality or class particularly in 308 platform. Most everything else is octagon or round stock spiffed up or machined out to a useless skeleton for pubes to keep in a case somewhere.
By the way after getting sucked into the Aero frame of mind they can put the "E1" enhanced receivers AND ALL their handguards in the crapper. Junk.
Their YouTube video on the gen 2 state they are USA made.