Four interchangeable high-intensity LitePipes are included with all M-Series sights allowing the shooter to adjust to existing light conditions. The S-Series includes a single LitePipe in your choice of green or red at a more economical price.HiViz?s snap on/off magnetic base is available in four different sizes to fit virtually any rib width from 11/64″ to 9/16″. Refer to the selection chart for compatibility. Not compatible with fiber or aluminum ribs.

M300 – Fits: ribs from .218″ -.328″ (7/32 – 21/64″; 5.5 mm – 8.3 mm). Fits Remington: All field models; Browning: Gold 10 ga. BPS Auto-5; Beretta: Comp. T & ST ribs Pintail auto; Ruger: Red Label field guns; Ithaca: Model 37 & other models: Benelli: Super Black Eagle & all field guns; Franchi: Field guns.