Williams custom LRS adapter plates are designed specifically for our LRS sight and will lower the LRS sight an additional 15% to 20%. When paired with our LRS sight, shooters can see up to a 50% 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. FeaturesAluminum BuildAllows Mounting on Popular Platforms NotesRemington 870 Version Does NOT Fit 20 Gauge