FLUG WERK Fw-190 Replica —

Very interesting to see these being remade. More details about that one?

How to sesrch the faa registry for flug werk aircraft

Don't recall seeing FW-190A with a 4 bladed prop before.

FW stands for Focke Wulf and not Flug Werk. Focke Wulf FW-190 was one of the fastest and most dangerous fighterplanes of Germany ion WWII.

Nierop - Flug Werk appears to be the name of the replica company. From Wikipedia:
Starting in 1996[49] a small German company, Flug + Werk GmbH,[50] began work on new Fw 190 A-8s

Tim Segulin, apparently this aircraft is from the Military Aviation Museum in Virginia Beach (and is likely N190BR but I can't verify). The website states, "This aircraft is unusual in that it is fitted with a four-bladed propeller and hub (rather than the original three-blade propeller), and has a modified cowling to fit a more modern Tupelov Tu-2 engine."