Browning 1132863 Midas Invector-DS 20Gauge Improved Modified Stainless Steel
The Browning Midas Invector-DS 20-gauge improved modified choke tube delivers the precision and durability you need for consistent shotgun performance in the field. This stainless steel choke is engineered for 20-gauge Invector-DS shotguns and offers the tighter pattern control of an improved modified constriction—a go-to choice for hunters who want reliable shot placement at moderate distances without sacrificing the swing and speed that come with a lighter gauge.
Built from stainless steel, this choke resists corrosion from moisture, salt air, and cleaning solvents, so it performs year after year whether you're hunting coastal marshes, hardwood bottoms, or anywhere in between. The Invector-DS system is Browning's modern interchangeable choke platform, designed for quick, tool-free changes in the field—swap chokes to match your quarry and cover without fumbling or waiting.
Improved modified constriction sits in the middle of the tightness spectrum: tighter than modified for denser patterns and longer effective range, yet more forgiving than full choke if your aim is slightly off at closer distance. It's a practical middle ground for upland game, waterfowl, and clay target shooting where you need a balance between pattern density and versatility.
Key Features
- Stainless steel construction resists corrosion and extends service life
- Invector-DS compatible—fits Browning 20-gauge shotguns with Invector-DS threading
- Improved modified constriction for denser, longer-range patterns
- Tool-free quick-change design for in-the-field choke swaps
Specifications
| Gauge | 20 |
| Choke Type | Invector-DS |
| Constriction | Improved Modified |
| Material | Stainless Steel |
| Browning Part Number | 1132863 |
Frequently Asked Questions
Will this choke fit my Browning shotgun?
This Invector-DS choke is designed for Browning 20-gauge shotguns equipped with Invector-DS choke threading. Confirm your shotgun uses the Invector-DS system before purchasing—it is not compatible with older Invector or other choke standards.
What's the difference between improved modified and other constrictions?
Improved modified constriction is tighter than standard modified, producing a denser shot pattern that extends effective range. It's tighter than improved cylinder but looser than full choke, making it a versatile middle-ground choice for hunting and sport shooting where you want good pattern density without extreme constriction.
Why stainless steel for a shotgun choke?
Stainless steel resists rust and corrosion from moisture, salt exposure, and cleaning chemicals. If you hunt in wet conditions, coastal areas, or store your gun in humid environments, stainless chokes maintain their finish and function longer than standard steel.
Can I change this choke myself in the field?
Yes. The Invector-DS system allows tool-free choke changes—simply unscrew the current choke and thread in a new one. This lets you swap constrictions quickly without tools or breaking down the shotgun.

