Description
The CZ 550 Rigby Magnum Action Only is a controlled-round-feed, Mauser 98-pattern magnum action designed for custom rifle builds. It’s the bare receiver, machined to accept Rigby-based cartridges up to 3.75″ in length, giving you a rock-solid foundation for a serious big-game or long-range rifle. I’ve built on a few of these, and they’re a gunsmith’s dream—a true blank canvas with legendary reliability baked into the steel. This specific CZ 550 Rigby Magnum Action Only, Rigby Based Calibers up to 3.75″ Long, is the heart of a rifle meant for the world’s toughest game and most demanding shots.
Key Features
- Controlled-round-feed Mauser 98 magnum action for ultimate reliability.
- Machined for Rigby-length cartridges up to 3.75″ (like .416 Rigby, .375 H&H).
- Sold as an action-only for complete custom build flexibility.
- Classic claw extractor and fixed ejector for positive feeding and extraction.
- Robust, forged steel construction built to handle serious pressure.
- Integral dovetail scope mount bases on the receiver ring and bridge.
Specs & Details
| Specification | Detail |
|---|---|
| Action Type | Controlled-round-feed Magnum Mauser 98 |
| Cartridge Length | Up to 3.75″ (Rigby-based) |
| Material | Forged Steel |
| Scope Mounting | Integral 19mm dovetail (front & rear) |
| Trigger | Single-set trigger (typically included) |
| Safety | Classic wing-style safety |
Look, here’s the thing—this isn’t a finished rifle. It’s the crucial first component. You’ll need to source a barrel, stock, bottom metal, and have a competent smith put it all together. The good news? The integral dovetail means mounting a quality optic from brands like Leupold or Zeiss is straightforward, often with no gunsmithing required for the rings. At $581.57, you’re investing in one of the most respected magnum actions available, a platform that’s been proven from the African veldt to the Alaskan tundra. Its weight, a solid foundation for a build, helps manage the recoil of the serious cartridges it’s meant for.
Who This Is For
This action is for the experienced shooter or hunter who wants to build a custom rifle from the ground up. It’s for the handloader chasing ultimate accuracy in a long-action magnum, or the hunter planning a dangerous-game safari who demands absolute mechanical reliability. If you’re dreaming of a rifle in .416 Rigby, .375 H&H, or even a wildcat based on that long case, this is your starting point. It’s a project, but one with a world-class pedigree. This item ships to Missouri and compliant US states, ready for your FFL to receive and your gunsmith’s bench.
Pros & Cons
Pros: Legendary controlled-round-feed reliability. Massive strength for the biggest cartridges. Excellent platform for a true custom rifle. Integral scope mounts simplify optics setup. The classic Mauser 98 design is time-tested and trusted.
Cons: Requires a full custom build—significant additional cost and time. Heavier than many modern actions. Not a drop-in solution; needs a skilled gunsmith. That said, the result is a rifle built exactly to your specifications.
Frequently Asked Questions
Q: What calibers will this action actually handle?
A: It’s chambered for, well, nothing yet—it’s an action. But it’s machined for cartridges based on the .416 Rigby case or similar length, up to 3.75″. This includes .416 Rigby, .375 H&H Magnum, .458 Lott, .404 Jeffery, and many standard .30-06 family cartridges with room to spare.
Q: Does it come with a trigger and bottom metal?
A: It typically includes CZ’s excellent single-set trigger mechanism. Bottom metal (the trigger guard and magazine box assembly) is a separate purchase you’ll need to source, as the stock inletting will dictate which pattern you buy.
Q: Can I use a standard long-action stock?
A: Not directly. The CZ 550 has its own unique action footprint and screw spacing. You’ll need a stock specifically inlet for the CZ 550 Magnum action, or a blank to be inlet by your gunsmith. Planning this is a key part of the build process.
If you’re ready to start the journey of building a heirloom-quality magnum rifle on one of the best actions ever designed, this CZ 550 foundation is available at firearms-missouri.com for Missouri residents and nationwide.
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