CZ 457 Specifications & Reference Data

What is the CZ 457 action screw torque?

CZ's 2025 manual says 3.5 N·m, about 31 in-lb. Their FAQ splits it up: 25 in-lb for wood stocks, 35 in-lb for chassis rifles and the Varmint Precision Trainer. In an aftermarket stock, go with that maker's number. If the stock is pillar bedded, you can torque it the same every time without crushing wood. If you're replacing screws, longer action screws trim to fit most stocks, and you'll want a torque driver to hit the number.

What is the CZ 457 barrel screw torque?

5.5 N·m, about 49 in-lb, on the two barrel set screws. They take a 3 mm hex. If yours are chewed up, a set of stainless replacements is cheap insurance.

Does the CZ 457 use an 11mm or 3/8 inch dovetail?

It's 11 mm, cut right into the receiver. 3/8 inch rings won't clamp it properly, so use 11 mm rings or a dovetail-to-Picatinny rail.

What scope mount do I need for a CZ 457?

Either 11 mm dovetail rings, or a dovetail-to-Picatinny rail like a 0 MOA rail so you can run standard Picatinny rings. If you're stretching past 100 yards, a 15 MOA or 30 MOA rail gives you more elevation to work with. Slip-fit dovetail rails like those or a full-length clamp-on rail like the Area 419 both work; it comes down to personal preference.

What is the CZ 457 muzzle thread pitch?

U.S. threaded rifles are 1/2-28, the same as most rimfire suppressors. The Royal and a lot of export rifles are 1/2-20, so check yours before you buy a can or a brake.

What is the CZ 457 bolt knob thread?

M6 × 1.0. Any M6 knob made for the 455 or 457 threads right on, and it's a five-minute upgrade if you want something bigger to grab. A lot of knobs made for Bergara rifles use the same thread too.

What is the CZ 457 barrel twist rate?

1:16 for .22 LR and .22 WMR, and 1:9 for .17 HMR, per CZ's catalog. There are plenty of aftermarket barrels out there, and beyond twist the features come down to personal preference.

What is the CZ 457 trigger pull weight?

The factory trigger adjusts from about 1.8 to 3.4 lb and ships around 2.5 to 3.1 lb. That's fine for hunting; for competition most shooters go to an aftermarket trigger. A modified trigger spring gets most rifles down to around 8 oz or 12 oz.

What is the CZ 457 bolt throw?

60 degrees, down from 90 on the 455. It clears big scopes and makes quick follow-up shots easy. The handles are easy to damage if the rifle takes a fall, and OEM replacement handles are available.

What calibers does the CZ 457 come in?

.22 LR, .22 WMR, and .17 HMR. It's the same action for all three; you change the barrel and magazine. Going from a .17 HMR or .22 WMR to .22 LR, you'll need a spacer block and its pin, and it's a good time to put in an extended magazine release.

What is the difference between the CZ 457 standard and MATCH chamber?

MATCH chambers on designated MTR rifles are cut tighter to the cartridge than the standard chamber. They're built around match ammo. Aftermarket barrels like Lilja carry match chambers too, and there are many makers, from Pete's Pillars to L3i, Bartlein, IBI, and more.

How much does a CZ 457 weigh and how long is it?

Anywhere from about 4.7 lb (Carbon) to 8.6 lb (MTR, LRP Black), and about 33.6 to 42.8 inches overall depending on model and barrel.

How do I swap a CZ 457 barrel?

Pull the action out of the stock (two action screws). Loosen the two barrel set screws with a 3 mm hex key, slide the barrel out, and slide the new one in. Snug the set screws to 5.5 N·m (49 in-lb), drop it back in the stock at the right action screw torque, and function check before you shoot. If you're not sure about headspace, have a gunsmith look at it.

What do I need to switch my CZ 457 barrel?

The new barrel, a 3 mm hex key for the two barrel set screws, a torque driver set to 5.5 N·m (49 in-lb), and a driver for the action screws. Going between .22 LR and .22 WMR / .17 HMR also takes the matching magazine and the .22 LR magazine well spacer block. You may also need a magazine for the new caliber.

Can I convert a CZ 457 from .22 LR to .22 WMR or .17 HMR?

Yes. Get a barrel in the new caliber, like a .17 HMR or .17 Mach 2 barrel, and the right magazine. .22 WMR and .17 HMR share a magazine; .22 LR has its own. CZ's factory barrel sets come with a magazine, which keeps it simple.

What are the CZ 457 factory barrel lengths?

Mostly 16.2, 20.7, or 24.8 inches (412.5, 525, or 630 mm), depending on model. The CZ 457 Target runs a 26 inch barrel. CZ sells American, MTR, and Lux barrel sets in 16, 20, and 24 inch lengths.

What are the CZ 457 factory barrel diameters?

It depends on the model. American, Synthetic, and Lux rifles have light sporter barrels; Varmint, MTR, and Thumbhole rifles run heavier profiles. The Varmint Precision Chassis MTR has a .875 inch bull barrel.

What is the biggest barrel I can run on a CZ 457?

The biggest drop-in we know of is the L3i 24 inch bull at 1.180 inch, with Lilja at 1.124 inch. The catch is the stock: the MDT Field Stock tops out at .920 and Boyds at .875, so a barrel that size wants a chassis like the MDT ACC Elite, which clears up to 1.25 inch.

What is the largest barrel the MDT Field Stock fits on a CZ 457?

Up to .920 inch, which covers most heavy factory and aftermarket barrels. If you're going bigger, the MDT ACC Elite clears up to 1.25 inch, and the MDT Oryx, Grey Birch, and KRG Bravo list the same.

Are CZ 455 and CZ 457 barrels interchangeable?

They use a related barrel attachment system, so a lot of barrels cross over. Still check the specific barrel, chambering, and whether your stock clears the contour before you order a barrel.

What aftermarket triggers fit the CZ 457?

Timney makes a CZ 457 trigger that adjusts from 10 oz to 2 lb, curved or straight. JARD makes drop-in modules in 3 to 6, 7 to 10, and 11 to 12 oz; the 3 to 6 oz JARD is the lightest out there. Or try a trigger spring in the factory trigger. Going too light can cause slam fires if it isn't tuned properly.

Do I need pillar bedding on a CZ 457?

You don't need it, but it helps. Most factory wood stocks aren't pillared, so action screw torque wanders as the wood moves with weather. Pillars put that torque on metal and keep your zero more consistent. If your stock is tight around the screws, SlimLine pillars fit where standard ones won't. Stock makers list the screw spacing at 5.5 inches.

Why won't my CZ 457 extract?

Start by cleaning the chamber and the extractor. After that, the usual culprit is a tired extractor spring, and a new spring fixes a lot of rifles. If it still struggles, upgraded extractors like the DPG Talon or Volquartsen Exact Edge are made for the 457.

Why won't my CZ 457 magazine seat or drop free?

First make sure the magazine matches your caliber. Fit comes from the magazine housing and spacer block, so a square or radiused spacer block or an aluminum magwell can clean up how mags go in and lock. An extended release makes them easier to drop. Check lock-up after any change.

What aftermarket extractors fit the CZ 457?

Tolerance stacking is challenging on the 457, so Pete's Pillars, L3i, DPG, and Position 7 all take a swing at extraction solutions. There's also a replacement extractor and holder set if you just want fresh parts.

What does the CZ 457 cocking indicator mean?

It means the striker is cocked, not that there's a round in the chamber. Always check the chamber. If the factory plastic indicator is hard to see, a stainless extended indicator stands out more.

Can the CZ 457 be dry-fired?

CZ's manual allows it during unloading but doesn't recommend doing it a lot. Use snap caps for practice. If a pin ever gets peened, replacement firing pins drop right in.

What firing pin upgrades are there for the CZ 457?

Tip shape affects ignition and accuracy, so a few makers rework it. There's a reshaped-tip pin for .22 LR, the Position 7 competition pin in S7 with a DLC finish, and modified factory pins from Whidden. For a straight replacement, an OEM-style pin does the job.

How is the CZ 457 different from the CZ 455?

Bolt throw dropped from 90 to 60 degrees, the safety became push-to-fire, the stamped steel bottom metal is gone, and the trigger adjusts better.

Which magazines fit the CZ 457?

CZ 452, 455, and 457 magazines in the matching caliber all work. CZ makes .22 LR mags in 5, 10, 15, and 25 rounds and .22 WMR / .17 HMR in 5 and 10. For billet mags there's the Position 7 13 round, the Position 7 10 round Shorty, and L3i's 10 and 13 round. A single-shot adapter is available too. For factory mags, we recommend CZ OEM 12004, 12001, and 12060.

What stocks fit the CZ 457?

Anything made for the CZ 457 inlet. Don't assume a 455 stock will fit.

Do CZ 455 triggers fit the CZ 457?

Not reliably. The trigger and safety setups are different, so buy a trigger listed for the 457.

Who makes the CZ 457?

Česká zbrojovka Uherský Brod in the Czech Republic, since 2019. CZ-USA brings them into the U.S.

What is the difference between the CZ 457 American, Varmint, and MTR?

The American is the hunter: 630 mm light barrel and a walnut stock. The Varmint has a heavier 525 mm barrel. The MTR is the match rifle: heavy barrel in 16 or 20 inch, walnut stock, and a MATCH chamber on designated models.

Is the CZ 457 available left-handed?

Yes. CZ added left-hand models in 2022: the American in .22 LR and .22 WMR, and the Varmint in .22 LR. They have a left-hand bolt with the same 60 degree throw and mirrored controls.

Which CZ 457 parts are different on left-hand rifles?

The bolt, bolt handle, extractor side, and trigger are hand specific. Barrels, magazines, bolt knobs, firing pins, and pillars are the same on both. Timney and JARD both make left-hand CZ 457 triggers.

Are there left-hand stocks or chassis for the CZ 457?

Not many. Grey Birch will build its LA Chassis 457 in left hand on request. Check the hand on any stock or chassis listing before you order; a lot of them are right-hand only.

What is the CZ 457 Target?

CZ's single-shot ISSF-style rifle: 26 inch cold hammer forged heavy MATCH barrel, a fully adjustable aluminum chassis developed with Olympic champion Matthew Emmons, and a flyweight trigger that also fits other 457s. CZ guarantees 12 mm ten-shot groups at 50 m.

Who is Matthew Emmons?

An American Olympic rifle shooter: gold in 50 m prone at Athens 2004, silver in prone at Beijing 2008, and bronze in three positions at London 2012, plus the 2002 world title in prone. He's a CZ ambassador and helped develop the CZ 457 Target chassis, showing off the platform's modularity, trigger, and barrel swapping.

What is Pete's Pillars' history with the CZ 457?

Pete's Pillars has been connected to the CZ 457 since its release. Early in the platform's life, when replacement parts were difficult to source in the U.S., Pete's Pillars was the first to bring a U.S.-made, high-quality, non-plated aftermarket CZ 457 firing pin to the U.S. market and the first to offer a non-plated replacement extractor/ejector spring. That early focus on hard-to-find CZ 457 components grew into a much broader line of Pete's Pillars-made parts and a long-term commitment to supporting the platform. Since the 457 came out in 2019, and after bringing the first aftermarket parts to the U.S. market, Pete has been widely considered the grandpa of CZ 457 parts.

Why replace a perfectly good factory part?

There is no single reason, and replacement is certainly not required. Some shooters want to modify or experiment with a component without permanently altering an original factory part that may be difficult or expensive to replace. This can be especially relevant with firing pins, where certain competition rules may restrict modifications or aftermarket components. Others simply prefer a different material. For example, the factory CZ 457 cocking indicator uses a polymer component, while Pete's Pillars offers a stainless-steel replacement. Some shooters simply prefer having spare parts on hand rather than dealing with the uncertainty of finding a replacement later. Whatever the reason, replacement parts give the owner another option. If the factory component is working well and meets your needs, there is no requirement to replace it. We like making parts, and some people like swapping parts. If you don't, no worries. We can still be friends.