BudsGunShop.com - Does this include the MOS plate

Hi Art and welcome. The filler plate is included in the package. Cheers, stay safe and enjoy!

from what I understand the red dot is not installed from the factory and it would have the blank off plate I strongly suggest you contact Glock to be 100% sure U.S. Headquarters
GLOCK, Inc.
6000 Highlands Parkway SE
Smyrna, GA 30082
USA
USA Phone: 770-432-1202
FAX: 770-433-8719
General Contact: Please contact GLOCKCustomerService@glock.us to inquire about new products, existing product information, current sales orders, your pistol's production date and returns.