S-Series comes with chosen color pipe pre-installed.

S-200 S200G-Ultra Narrow with green lite pipe only fits ribs from .172" - .25" (11/64" - 1/4"; 4.2mm - 6.5mm)

S200R-Ultra Narrow with crimson LitePipe only fits ribs from .172" - .25" (11/64" - 1/4"; 4.2mm - 6.5mm)

Gun Models:
Beretta: 686 and 687 models with ultra narrow rib, AL390, A304, AL390 Field, 391 Urika Field; Browning: Gold Series, 28 ga. and .410 Citori; Sigarms: SA-3 Hunter, SA-5 Upland; Benelli: 20 gauge

S-300 S300G-Narrow with green light pipe only fits ribs from .219" - .313" (7/32" - 5/16"; 5.7mm - 8.2mm)

S300R-Narrow with crimson LitePipe only fits ribs from .219" - .313" (7/32" - 5/16"; 5.7mm - 8.2mm)

Gun Models:
Remington: All field models; Browning: Gold 10 ga., BPS, Auto-5; Beretta: Comp., T and ST ribs, Pintail auto; Ruger: Red Label Field guns; Ithaca: Model 37 and other models; Benelli: Super Black Eagle and all field guns; Franchi: Field guns

S-400 S400G-Wide with green light pipe only fits ribs from .313" - .438" (5/16" - 7/16"; 8.2mm - 11.3mm)

S400R-Wide with crimson LitePipe only fits ribs from .313" - .438" (5/16" - 7/16"; 8.2mm - 11.3mm)

Gun Models:
Winchester: All post-1964 pumps and autoloaders; Mossberg: All (except ported models); Browning: Citori target grades (except super wide ribs); Beretta: S682 Comp, trap guns.