Patternmaster Code Black Duck 20 Gauge Long Range Duck Choke Extended Ported for Browning Invector Plus or Winchester SX3/SX4

The Patternmaster Code Black Duck 20 Gauge Long Range Duck Choke is engineered for serious waterfowl hunters seeking precision, consistency, and maximum downrange energy. Designed for Browning Invector Plus and Winchester SX3/SX4 20-gauge shotguns, this extended, ported choke delivers dense, tight patterns for ducks, geese, and other waterfowl, giving hunters confidence for long-range, ethical shots.

Key Features

• .570 constriction optimized for long-range waterfowl patterns

• Extended tube design for improved pellet stability and pattern consistency

• Ported construction reduces muzzle rise and shortens shot string for better control

• Ideal for heavy duck loads and larger shot sizes

• Direct fit for Browning Invector Plus and Winchester SX3/SX4 20-gauge barrels

• Made from heat-treated, corrosion-resistant steel for lasting durability

• Precision-machined for repeatable, reliable performance

• Screw-in installation compatible with standard choke wrenches

Specifications

• Model: Patternmaster Code Black Duck (PM-5377)

• Gauge: 20 Gauge

• Constriction: .570 (Full / Long Range)

• Type: Extended, Ported

• Range: Long

• Game Type: Waterfowl

• Thread Type: Browning Invector Plus / Winchester SX3/SX4 screw-in pattern

• Material: Heat-treated, corrosion-resistant steel

• Installation: Screw-in, choke wrench compatible

• Recommended Loads: Heavy waterfowl loads (#2–#4 shot sizes)

• Warranty: Manufacturer warranty

Benefits

• Produces dense, ethical patterns for long-range waterfowl hunting

• Ported design reduces muzzle rise for faster follow-ups and improved control

• Extended profile stabilizes pellets and minimizes flyers for consistent patterns

• Durable construction withstands wet and harsh field conditions

• Direct compatibility with Browning Invector Plus and Winchester SX3/SX4 allows easy installation without modifications

Usage Instructions

1. Confirm the shotgun is unloaded and chamber is clear.

2. Remove any existing choke tube with a standard choke wrench.

3. Inspect and clean barrel threads before installation.

4. Hand-thread the Code Black Duck choke and snug with a choke wrench without over-torquing.

5. Pattern test at 20–40 yards using your preferred waterfowl load to verify pellet density and spread.

6. After use, clean and lightly oil the choke to maintain performance and prevent corrosion.

Patterning Tips

• Test multiple duck or goose loads at realistic hunting distances (30–50 yards) to find optimal patterns.

• Use larger shot sizes (#2–#4) for maximum coverage and downrange energy.

• Ensure choke is consistently seated for repeatable, reliable performance.

Warranty and Support

Covered under Patternmaster manufacturer warranty. Contact Patternmaster or an authorized dealer for warranty terms, fit verification, or customer support.

The Patternmaster Code Black Duck 20 Gauge Long Range Choke provides reliable long-range patterns, enhanced shot control, and field-ready durability for waterfowl hunters using Browning Invector Plus and Winchester SX3/SX4 shotguns.