Description
There are plenty of accurate rimfire bolt guns out there, but very few that fit a 10 year old on Saturday and a full grown adult on Sunday without touching a screwdriver. That is the whole idea behind the CZ 457 At-One Varmint. CZ dropped their 457 Varmint barreled action into a Boyd's AT-ONE laminate stock, which gives you push-button length of pull adjustment from 12.5 to 14.25 inches plus an adjustable comb with 5/8 inch of rise. Shorter arms, longer arms, big scope, small scope, it all dials in fast right at the bench.
Why the 457 At-One Varmint Shoots the Way It Does
Under that adjustable furniture is the same hardware that made the 457 a favorite in precision rimfire circles. The 24 inch cold hammer forged heavy barrel wears a black nitride finish and a 1:16 twist, and the muzzle is threaded 1/2×28 so adding a suppressor or muzzle device is painless. The 457 action is shorter and trimmer than the old 455, runs a smooth 60 degree bolt throw that leaves room for larger scope objectives, and feeds from a reliable detachable 5-round polymer magazine. The trigger is adjustable from the factory, and the receiver-mounted two-position safety is a push-to-fire design that instructors tend to appreciate when coaching newer marksmen.
Setting Up the CZ 457 At-One for Optics
There are no iron sights on this one, and that is by design. The receiver has an integral 11mm dovetail cut, so you can clamp rimfire rings straight to the action or add a Picatinny rail adapter if you would rather run standard rings. With the adjustable comb, getting a solid cheek weld behind a chunky scope is easy instead of a compromise.
At a bit over 7 pounds bare, the At-One Varmint has enough heft to settle nicely on bags for squirrels, steel, or club matches, without being a boat anchor in the field. If you want one rimfire that grows with a new marksman and still holds its own in NRL22 style shooting, this is a strong way to go.
Key Specifications
- Manufacturer: CZ-USA
- Model: 457 At-One Varmint
- Manufacturer Part Number: 02366
- UPC: 806703023663
- Caliber: .22 LR
- Action: Bolt Action
- Capacity: 5+1
- Barrel Length: 24"
- Barrel Type: Cold Hammer Forged, Heavy Profile
- Barrel Finish: Black Nitride
- Muzzle Thread: 1/2×28
- Twist Rate: 1:16
- Stock: Boyd's AT-ONE Adjustable Laminate
- Length of Pull: 12.5" to 14.25", push-button adjustable
- Sights: None, Integral 11mm Dovetail
- Safety: Two-Position, Push-to-Fire
What’s Included
- CZ 457 At-One Varmint rifle
- One 5-round detachable magazine
- Owner's manual
Frequently Asked Questions
How does the stock adjustment work on the CZ 457 At-One Varmint?
The Boyd's AT-ONE stock uses a push-button system, so no tools are needed. Length of pull adjusts from 12.5 to 14.25 inches, and the comb offers 5/8 inch of rise. That makes it quick to swap between different sized family members or to fine tune your cheek weld behind a scope.
Does the CZ 457 At-One Varmint come with sights or a scope rail?
It ships without iron sights. The receiver has an integral 11mm dovetail, so you can mount rimfire rings directly to it or install an 11mm-to-Picatinny rail adapter if you prefer standard rings. The adjustable comb makes it easy to line up behind larger optics.
Is the barrel on this 457 At-One threaded for a suppressor?
Yes. The 24 inch cold hammer forged heavy barrel is threaded 1/2×28 at the muzzle, which is the common rimfire suppressor thread pitch. It ships ready for a can or other muzzle accessory.
What magazines does the CZ 457 At-One Varmint use?
It uses CZ's detachable polymer rimfire magazines, the same pattern shared across the 457 and 455 lines. One 5-round magazine is included, and higher capacity CZ 457 magazines are widely available if you want spares for range days.





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