Browning 1130275 Standard Invector 20 Gauge Modified Flush Choke Tube - 17-4 Stainless Steel

The Browning 1130275 Standard Invector 20 gauge modified flush choke tube gives you a proven, versatile constriction for upland birds, waterfowl, and clay work. Built from 17-4 stainless steel and polished to a smooth finish, this tube delivers the durability and corrosion resistance serious shooters depend on—whether you're hunting in wet conditions or running rounds downrange at the range. The flush design sits completely inside the barrel, so there's no snag risk in brush or when shouldering your gun.

Browning choke tubes are manufactured to industry-standard constriction specs, which means you get repeatable, uniform shot patterns you can count on. The modified constriction sits in the middle of the tightness scale, making it a practical all-around choice that works across a range of shot types and hunting scenarios. If you already run Browning Invector barrels, this tube drops right in with no fuss—one of the real conveniences of sticking with matched components.

17-4 stainless steel is the real story here. It resists corrosion far better than standard steel, so your tube stays slick and clean even after long storage or exposure to moisture. That polish isn't just for looks; it helps shot separate cleanly as it moves through the constriction, contributing to those tight, even patterns you're after.

Key Features

• Modified constriction for versatile hunting and sport shooting applications
• Flush design sits fully inside the barrel—no protrusion or snag hazard
• 17-4 stainless steel construction resists corrosion and wear
• Highly polished finish for consistent shot flow and durability
• Manufactured to industry-standard constriction tolerances for reliable patterns

Specifications

Frequently Asked Questions

Will this 20 gauge choke tube fit my Browning shotgun?

This tube is designed for Browning barrels with Standard Invector choke systems. If your gun has Invector-Plus chokes, this standard tube will not fit. Check your owner's manual or barrel marking to confirm your choke system type.

What does a modified choke do compared to other constrictions?

Modified sits in the middle range of tightness. It offers a balance between shot spread and density, making it useful for hunting upland birds, waterfowl at moderate range, and clay sports. Tighter chokes (Full, Extra-Full) throw denser patterns at longer range; more open chokes (Improved Cylinder, Cylinder) spread shot wider for closer work.

Why does the flush design matter?

A flush choke sits completely inside the barrel, so it won't catch on brush, clothing, or a shooting bag. This is especially valuable in the field where snags can happen fast.

Is stainless steel better than regular steel for choke tubes?

17-4 stainless steel resists rust and corrosion better than standard steel, so it lasts longer when exposed to moisture and maintains its finish through repeated use and storage. This makes it a durable choice for serious shooters and hunters.