Williams Gun Sight LRS Adapter Plate Mossberg Hole Spacing. When paired with our LRS sight shooters can see up to a 50percent reticle height reduction compared to standard reflex sights attached to a picatinny rail. LRS adapter plates are model specific and are designed to fit factory drilling/tapping firearm specifications. Specifications for Williams Gun Sight LRS Mossberg Hole Spacing Adapter Plate: Manufacturer: Williams Gun Sight Color: Black Gun Type: Shotgun Gun Make: Mossberg Gun Model: Mossberg Model 930 Mossberg Model 590 Mossberg Model 835 Mossberg Model 935 Mossberg Model 500 Length: 9.75 in Height: 1.65 in Dimensions: 1.65 X 3.55 X 9.75 in Features of Williams Gun Sight LSR Adapter Plate Mossberg Hole Spacing Red Dot Sight Mounts Sits an additional 10percent lower Allows red dot to sit as low to the bore axis as possible Mossberg hole spacing Package Contents: Williams Gun Sight LSR Adapter Plate Mossberg Hole Spacing Red Dot Sight Mounts Williams Gun Sight 627355: LRS Adapter Plate Mossberg Hole Spacing