Hiviz M300 M300 Narrow Magnetic Fiber Optic Front Shotgun Sight

Narrow Model Fits Ribs From .218 To .328 (7/32 To 21/64) (5.5Mm To 8.3Mm).
Litepipe Colors: Green 0.135, Green 0.175, Red 0.135, Two Tone 0.175
Snap-On Magnetic Base