Johnny Stewart Rob Roberts Gun Works 200283 Biz Raptor Invector 12 Gauge 17-4 Ph S/S

The Johnny Stewart Rob Roberts Gun Works Biz Raptor Invector 12 gauge choke tube is built for shooters who demand durability and reliability in the field. Machined from 17-4 stainless steel, this Invector-compatible choke delivers the corrosion resistance and hardness you need whether you're hunting waterfowl in coastal marshes, working upland birds in rough terrain, or running tactical shotgun drills at the range. The stainless construction resists salt, moisture, and harsh conditions that would degrade standard steel chokes, making it a solid choice for serious 12-gauge operators.

The 17-4 PH stainless steel alloy is a premium material in the choke tube world—it's the same stuff used in aerospace and high-performance applications where failure isn't an option. You'll notice the difference in hand: this choke is noticeably robust and finished to tight tolerances. Rob Roberts Gun Works is known for attention to detail, and that shows in how this tube seats and performs.

Installation is straightforward on any shotgun with Invector threading. Once installed, you'll appreciate both the precision fit and the peace of mind that comes with a choke that won't corrode or degrade over seasons of use. For 12-gauge shooters looking for a choke tube that handles hard use and coastal or wet-weather hunting, this is a no-nonsense option.

Key Features

• 17-4 PH stainless steel construction for superior corrosion resistance
• Compatible with Invector-threaded 12-gauge shotguns
• Precision-machined by Rob Roberts Gun Works
• Built for durability in harsh field conditions

Specifications

Frequently Asked Questions

What shotguns is this Invector choke compatible with?

This choke tube fits any 12-gauge shotgun with Invector threading, including most Beretta, Benelli, Mossberg, and Winchester models that use that standard.

Why choose stainless steel over standard choke tubes?

Stainless steel resists corrosion and rust far better than carbon steel, making it ideal if you hunt in wet, coastal, or humid environments or if you want a choke that will maintain its finish over many seasons without maintenance.

Is this choke easy to install and remove?

Yes—like all Invector chokes, it installs and removes by hand or with a standard choke tube wrench. No special tools are required.