Iver Johnson 20 Gauge Rifled Extended Mobil Choke Tube

The Iver Johnson 20 Gauge Rifled Extended Mobil Choke Tube (brand part number 20GARIFLED) brings a dedicated rifled bore to Mobil-pattern 20 gauge shotguns for improved slug accuracy. Iver Johnson builds this choke from stainless steel and cuts internal rifling that stabilizes sabot and rifled slug loads far better than a smoothbore or standard-constriction choke. The extended profile lets the tube protrude past the muzzle for easy hand installation, and the Mobil-pattern threads mean it drops straight into any 20 gauge barrel cut to that system. It’s a simple, effective upgrade for hunters who want tighter slug groups without buying a dedicated rifled barrel.

Key Specifications

• Built for 20 gauge Mobil-pattern shotguns, matching the standard 20 gauge bore.
• Cut with a rifled bore, imparting spin to sabot and rifled slugs for tighter accuracy.
• Uses the Mobil choke thread pattern, so it installs directly into Mobil-cut barrels.
• Machined from stainless steel for corrosion resistance under repeated slug loads.
• Finished in an extended profile, letting the tube protrude past the muzzle for tool-free hand installation.
• Overall length runs approximately 4 inches in its extended configuration.

Frequently Asked Questions

What loads is this choke designed for? The rifled bore is built specifically for sabot and rifled slug loads, not standard shot shells.

Will it fit any 20 gauge shotgun? It fits shotguns cut for the Mobil choke thread pattern; check your barrel’s choke system before ordering.

Why stainless instead of carbon steel? Stainless steel resists corrosion better, which matters for a choke that sees repeated slug loads.

Buy the Iver Johnson 20 Gauge Rifled Extended Mobil Choke Tube

Tighten up your 20 gauge slug groups without swapping barrels. Order it from our Iver Johnson lineup, part of our shotgun chokes selection, at our Lubbock, Texas gun shop for fast, direct shipping.