In this video, Caliber Six Airsoft presents an unboxing and review of the Arcturus Centaur AR03 M4 PDW. The weapon boasts a robust construction of steel and aluminum, ensuring durability. It features an 8-inch octagonal M-LOK handguard, which is compatible with any M-LOK accessories. A full-length 20mm Picatinny top rail is integrated for the attachment of optics and back-up iron sights.