APF Large Window Upper Receiver w/ Forward Assist / Dust Cover Black. . Developed working with some of the most heavy duty and long lasting resources available these AR15 Upper Receivers by APF will present you with a product that will give numerous years of reliability. APF has been generating superior quality merchandise for a very long time and the APF Large Window Upper Receiver w/ Forward Assist / Dust Cover is their way of demonstrating exactly how much they care. Here at OpticsPlanet we make it our obligation to obtain the most suitable product for all of your preferences and presenting the APF Large Window Upper Receiver w/ Forward Assist / Dust Cover is something that we are delighted to offer. Specifications for APF Large Window Upper Receiver w/ Forward Assist / Dust Cover: Manufacturer: APF Color: Black Fabric/Material: Aluminum Package Contents: APF Large Window Upper Receiver w/ Forward Assist / Dust Cover APF RPUP906: Large Window Upper Receiver w/ Forward Assist / Dust Cover Black