This is does not have screw in chokes from the factory James. It comes with the standard "Fixed Cylinder" Choke which is standard for self defense or short barreled shotguns.

Not it does not have screw in choke it is a Fixed Cylinder choke specs UPC: 015813506595 Description: MOS 590 SHOCKWAVE 12M/14CB BLU Brand: Mossberg Model: Model 590 Shockwave Type: Shotgun: Pump Action Caliber: 12 Gauge Finish: Blue Action: Pump Action Stock: Black Synthetic Sight: Bead Barrel Length: 14.375 Overall Length: 26.37 Weight: 5.3 lbs Capacity: 2.75 5+1 Safety: Ambidextrous Tang Safety Receiver: Blue Chamber: 3 Chokes: Fixed Cylinder Bore Butt Plate: N/A Features: Raptor Grip, Forend with Strap; Clean out Magazine Tube, NON NFA DUE TO 26.37 OAL

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Hi James, No it doesn't have screw in choke capabilities.sorry.

Not it does not have screw in choke it is a Fixed Cylinder choke specs UPC:
015813506595
Description:
MOS 590 SHOCKWAVE 12M/14CB BLU
Brand:
Mossberg
Model:
Model 590 Shockwave
Type:
Shotgun: Pump Action
Caliber:
12 Gauge
Finish:
Blue
Action:
Pump Action
Stock:
Black Synthetic
Sight:
Bead
Barrel Length:
14.375
Overall Length:
26.37
Weight:
5.3 lbs
Capacity:
2.75 5+1
Safety:
Ambidextrous Tang Safety
Receiver:
Blue
Chamber:
3
Chokes:
Fixed Cylinder Bore
Butt Plate:
N/A
Features:
Raptor Grip, Forend with Strap;
Clean out Magazine Tube, NON NFA DUE TO 26.37 OAL