ribs from .171??? to .265??? (11/64??? ??? 17/64???, or 4.2mm ??? 6.7mm). It comes with a
red or green fiber optic family LitePipe.
(686 & 687 models with ultra narrow rib, AL390, A304, AL390 Field, 391
Urika Field), Browning (Gold Series, 28-gauge and .410 Citori), Sigarms (SA-3
Hunter, SA-5 Upland), Benelli (20-gauge).