The United States Made - Genuine US Military Poncho Liner, which is offered by Ozark Outdoorz, LLC, is described in the manufacturer's product info as genuine U.S. military surplus made in the USA. It even has a National Stock Number (NSN 8405-00-889-3683), which usually means it's an authentic military item.

That said, our research does reveal mixed opinions on its authenticity. Some folks feel that it doesn't live up to the genuine military poncho liners and have mentioned the fabric seems "cheap and scratchy" and even called it "rubbish" in certain cases. This suggests some skepticism about how genuine it really is.

On the other hand, others have had great experiences, saying it matches the quality and description you'd expect, like it's "exactly as advertised" and similar to a liner they were "issued in the Army." These varying opinions suggest that some products might meet authentic standards, or experiences could vary due to different product batches.

The inconsistency in feedback could be due to manufacturing differences or personal expectations of what a military surplus should be like. So, the key here might be to buy from a reliable seller and double-check the NSN against military records if possible.

Noting that this poncho liner is made by Winston-Salem Industries for the Blind might also offer some confidence, tying it to a known manufacturer.

In the end, if you're thinking about getting this poncho liner, consider both the positive and negative feedback from others and aim to purchase from a trustworthy source. This way, you can better match your expectations with the actual product, giving you a clearer picture before you buy.