BudsGunShop.com - ported barrel

It currently does not Geoff. Even this "Enhanced" version does not. savagearms.com/firearms/shotgun/stevens-series/555-enhanced

No it doesnt.

sorry Savage does not offer porting on any of their O/U shotguns 555 ENHANCED
We've dovetailed performance and value in the Stevens 555 Enhanced. Its light aluminum receiver is scaled to gauge and incorporates a steel insert that reinforces the breech, minimizing weight and maximizing strength. The fast-handling over-and-under boats upgrades including an Imperial walnut stock and fore-end, auto shell ejector and laser-engraved filigree ornament receiver. Standard features include a manual safety and a single, selective mechanical trigger—all at a price that's unmatched among comparable shotguns.
Features
Auto ejector
Imperial walnut stock
Laser-engraved filigree ornament
5 interchangeable chokes
Lightweight aluminum receiver
Single selective mechanical triggers
Chrome-lined barrels
Tang-mounted safety
SKU Number
22592
MSRP
$865.00
Action
Over/Under
Barrel Color
Black
Barrel Finish
Matte
Barrel Length
28"
Magazine Capacity
2 Rounds
Gauge
12 GA
Hand
Ambidextrous
Length of Pull In
14"
Magazine
Tube
Overall Length
42 7/8"
Receiver Color
Black
Receiver Finish
Matte
Receiver Material
Carbon Steel
Type
Shotgun
Stock Color
Black
Stock Finish
Matte
Stock Material
Synthetic
Weight Lb
6.6