The NDZ Glock 43 43x 48 Rear Slide Cover Plate is a billet aluminum replacement for the factory plastic plate, offering a 100% direct fit with custom laser-engraved designs and color fill options for easy firearm identification. Made in the USA from durable 6061 T6 Aircraft Billet Aluminum, it maintains OEM tolerances and allows for a unique, customized look when paired with other NDZ products.