Browning 1130255 Standard Invector 20 Gauge Full Flush Choke Tube - 17-4 Stainless Steel

The Browning 1130255 Standard Invector 20 gauge full choke tube is a reliable, no-frills choice for shooters who want a proven constriction pattern in a durable stainless steel package. Built from 17-4 stainless steel, this flush-mount choke delivers the tight, consistent patterns you'd expect from a full choke — ideal for waterfowl and upland hunting where you need pellet density at distance. If your Browning 20 gauge accepts standard Invector choke tubes, this is a straightforward upgrade or backup tube that handles steel and lead shot without complaint.

The full choke pattern (55–85% pellet retention within 40 yards) concentrates your shot for longer-range work and helps you make cleaner passes on distant birds. At 4.8 ounces, it carries no weight penalty and seats flush with the muzzle, keeping your sight picture unobstructed and your gun balanced. The single notch (I) marking makes identification quick in the field or at the range.

Whether you're building out a tube set for different hunting scenarios or replacing a worn choke in a gun you've relied on for years, this Browning tube is purpose-built to work. Stainless construction resists corrosion even in wet conditions, so you're not fussing with rust on a component that lives in the muzzle. Drop it in, seat it hand-tight, and hunt.

Key Features

• 17-4 stainless steel construction for corrosion resistance and durability
• Standard Invector compatible — fits Browning 20 gauge shotguns with Invector choke systems
• Full choke pattern (55–85% retention) for concentrated shot and longer effective range
• Flush-mount design maintains sight picture and gun balance
• Single notch (I) marking for quick field identification
• Lightweight at 4.8 oz with no muzzle obstruction

Specifications

Frequently Asked Questions

What Browning shotguns use standard Invector choke tubes?

This tube is compatible with Browning shotguns chambered for 20 gauge that accept standard Invector chokes. Check your gun's manual or the markings on the existing choke to confirm compatibility before purchasing.

What is a full choke pattern, and when would I use it?

A full choke delivers 55–85% of your pellets in a tight pattern at 40 yards, concentrating shot for longer-range hunting. Full chokes excel on waterfowl and distant upland birds where you need denser pellet density to cleanly fold birds beyond 35 yards.

Is this tube safe for steel shot?

Yes. The 17-4 stainless steel construction is built to handle both steel and lead ammunition. Always verify your shotgun is rated for steel shot before using it.

How do I know which choke notch marking means what?

The single notch (I) on this tube marks it as a full choke. Browning uses a standard notch system across its Invector lineup — your gun manual will show the full key if you need to identify multiple tubes in your set.