Shopping > Al's Custom Products > Al's Shotgun PartsClick for larger image Remington Vent Rib Non Gunsmthing Mount Price: $0.00 Select Rib Width NGS-MT .295 Rib Width (+$59.95) NGS-MT .306 Rib Width (+$59.95) 2833:+:59.95,2834:+:59.95 Quantity: Available in two widths (.295 and .306) Non Gunsmithing.