Michael, yes Sir this Performance Center Pistol has a Ported Barrel as pictured here : smith-wesson.com/firearms/performance-center-ported-mp-9-shield-m20-every-day-carry-kit

yes it is ported see *****UPC:
022188878424
Description:
S&W M&P M2.0 PC SHLD 9MM KIT
Brand:
Smith & Wesson|Smith & Wesson Performance Ctr
Model:
M&P Shield M2.0 Performance Center Carry Kit
Type:
Pistol: Semi-Auto
Caliber:
9MM
Finish:
Matte Black Stainless Steel Slide
Action:
Double Action Only
Stock:
Black Polymer Frame
Sight:
Ft: HIVIZ Green Rr: HIVIZ Red
Barrel Length:
3.1
Overall Length:
6.1
Weight:
18.2 oz
Capacity:
7+1 & 8+1
# of Mags:
2 (One With Extended Capacity for Full Grip)
Safety:
Thumb Safety
Receiver:
Polymer
Features:
*****Ported Barrel and Slide, PC Tuned Action;
M&P Knife, LED Flashlight, PC Discreet Gun Folio