Looks like the difference is theCapacityof the mags; 10 vs 20
CZ SCORPION EVO 3 S1 9mm 01356
UPC
806703013565
MPN
01356
Brand
CZ
Model
SCORPION EVO 3 S1
Caliber
9mm
Capacity
10+1
Features
Single Point Sling Attachment, Accessory Adapter;Ambidextrous Controls, Swappable Charging Handle
Type
Pistol: Semi-Auto
Action
Single Action
Finish
Battleship Grey
Stock
Battleship Grey, Polymer Pistol Grip
Sight
Low Profile Adjustable Sights
Safety
Manual Safety
Receiver
Polymer, Integral Accessory Rails
Muzzle
Slotted Compensator 1/2X28 Thread Pitch
Barrel Length
7.72
Overall Length
16
Weight
5.0 lbs
Number Of Mags
2
Msrp
911.23
CZ SCORPION EVO 3 S1 9mm 806703913568
UPC
806703913568
MPN
91356-CZU
Brand
CZ
Model
SCORPION EVO 3 S1
Caliber
9mm
Capacity
20+1
Features
Single Point Sling Attachment, Accessory Adapter;Ambidextrous Controls, Swappable Charging Handle
Type
Pistol: Semi-Auto
Action
Single Action
Finish
Battleship Grey
Stock
Battleship Grey, Polymer Pistol Grip
Sight
Low Profile Adjustable Sights
Safety
Manual Safety
Receiver
Polymer, Integral Accessory Rails
Muzzle
Slotted Compensator 1/2X28 Thread Pitch
Barrel Length
7.72
Overall Length
16
Weight
5.0 lbs
Number Of Mags
2
Msrp
911.23