5D-510 Remington 510, 511, 512, 513, 521T

The Williams™ 5D-510 Receiver Peep Sight is specifically designed to fit the Remington 510, 511, 512, 513, and 521T. Williams™ 5D-510 Receiver Peep Sights offer shooters unmatched open sight visibility at longer distances than standard fixed open sights. The Williams™ 5D-510 Receiver Peep Sight is compatible with a front fiber optic fire sight. Williams™ Fire Sights gather ambient light and reflect it back to your eye, enabling faster target acquisition. Williams™ Sights do not use artificial light sources to create their sight visibility.

This Williams™ 5D-510 Sight Set fits the following firearms: Remington 510, Remington 511, Remington 512, Remington 513, Remington 521T
The Williams™ 5D-510 Sight Set DOES NOT fit any other firearms than those listed above.