BASTION Laser Engraved Butt Plate, Rear Slide Cover Back Plate for Glock 43 9mm G43 ONLY - Zero FXXS Given Compatible with Glock 43 9x19mm Model ONLY Hard coat anodized black T6 machined aluminum Lasered artwork won't rub off; not painted. Asterisk replaces letter U in F word. Replaces plastic factory part