Description
The 457 platform is the rifle that put CZ at the top of a lot of rimfire conversations, and this American Synthetic Suppressor-Ready version might be the most practical way to own one. Chambered in .17 HMR with a 20.5 inch cold hammer forged barrel and 1/2×28 muzzle threads, it comes out of the box set up for a suppressor, and the tight chamber tolerances CZ cuts into these barrels make them quiet, consistent hosts. The 1:9 twist stabilizes the speedy 17 grain loads this cartridge is known for, and flat-shooting .17 HMR is about as fun as varmint work gets.
Built Around CZ's Proven 457 Action
The receiver is machined from billet steel and wears an 11mm dovetail cut directly into the action, so mounting rings or a rail is simple and rock solid. There are no open sights, which is the right call since this cartridge begs for glass. You also get the 457's short 60 degree bolt throw for plenty of scope clearance, a fully adjustable trigger you can tune to your liking, and the push-to-fire two-position safety that American shooters grew up with. The interchangeable barrel system means you can swap calibers down the road without buying a whole new rifle.
A Synthetic Stock That Shrugs Off Weather
The black American-style synthetic stock borrows its lines from CZ's 557 centerfire rifles, and combined with the nitride metal finish, this is a rifle you can carry through wet fields and frosty mornings without babying it. Sling swivel studs come standard, and the whole package stays light enough to tote all day.
Why the 457 American Synthetic Makes Sense
Feeding comes from a detachable 5-round polymer magazine, the same reliable design CZ has been running for years. Whether you are thinning out ground squirrels, reaching out on steel, or just want a dependable .17 HMR that plays nice with a suppressor, this one covers the bases without any fuss. It is a working rifle with target-grade bones, and that combination is hard to beat.
Key Specifications
- Model: 457 American Synthetic Suppressor-Ready
- Manufacturer: CZ-USA
- MPN: 02315
- UPC: 806703023151
- Caliber: .17 HMR
- Action: Bolt Action, 60 Degree Bolt Rotation
- Capacity: 5+1
- Barrel Length: 20.5"
- Barrel: Cold Hammer Forged, Black Nitride
- Thread Pattern: 1/2×28
- Twist Rate: 1:9"
- Stock: Black American-Style Synthetic
- Sights: None, Integrated 11mm Dovetail
- Trigger: Fully Adjustable
- Safety: Two-Position, Push to Fire
What’s Included
- CZ 457 American Synthetic Suppressor-Ready rifle
- 1 x 5-round detachable polymer magazine
- Thread protector
- Owner's manual
Frequently Asked Questions
Does the CZ 457 American Synthetic Suppressor-Ready come with sights?
No, this model ships without open sights, and that is by design. The receiver has an 11mm dovetail machined directly into the billet action, so you can mount rings or an adapter rail and top it with the scope of your choice. Given how flat .17 HMR shoots, a quality optic is the way to get the most out of it.
What suppressors will fit the threaded barrel on this 457?
The muzzle is threaded 1/2×28, which is the most common thread pattern for rimfire suppressors, so the vast majority of rimfire cans will spin right on. Just make sure whatever suppressor you choose is rated for .17 HMR, since it runs at higher velocity than .22 LR. A thread protector keeps the muzzle covered when you are running it bare.
Is the trigger on the CZ 457 adjustable?
Yes, the 457 series comes with a fully adjustable trigger, so you can tune the pull weight to suit your preference. Most folks find they can get it crisp and light enough for precision work without any aftermarket parts, which is a big part of why the 457 has such a strong following.
Can I swap barrels on the 457 American Synthetic to shoot other calibers?
You can. The 457 uses CZ's interchangeable barrel system, so the same action can run .22 LR, .22 WMR, or .17 HMR barrel sets with the appropriate magazine. It is a nice way to build out a multi-caliber rimfire setup around one receiver and one stock.




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