This shotgun comes with a Cylinder Bore (Choke). Specs are : Description: REM 870 12M/18CB PG 6RD
Brand: Remington
Model: 870 Tactical
Type: Shotgun: Pump Action
Caliber: 12 Gauge
Finish: Matte Blue
Action: Pump Action
Stock: Pistol Grip
Sight: Bead
Barrel Length: 18.5
Overall Length: 28.25
Weight: 6 lbs
Capacity: 6+1
Safety: Cross-Bolt Safety
Receiver: Matte Blue
Chamber: 3
Chokes: Cylinder Bore

The 870 Express Synthetic Seven-Round model in the Remington® 870™ Express® Tactical/Home-Defense Shotguns, item # ,81187 has a fixed Cylinder Choke. It does not accept other chokes.

870 Express Synthetic Tactical – Seven-Round Capacity – Weatherproof matte-black synthetic stock. 18.5" barrel with fixed-cylinder-bore choke and single-bead front sight. Magazine holds six 2-3/4" or five 3" shells and one in the chamber for seven-shot capacity. Factory-installed two-shot extension.

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