Ceska Zbrojovka chambers the CZ 511 in .22 Long Rifle, the same rimfire cartridge used across most of the company's smallbore rifle line, including the bolt-action CZ 452.³ The rifle feeds from an 8-round detachable magazine and cycles by straightforward blowback operation, meaning the cartridge's own chamber pressure drives the bolt rearward against spring tension rather than any gas system or rotating lock.^1,3 That mechanical simplicity, standard for low-pressure rimfire ammunition, is a large part of why the CZ 511 could run for so many decades with so few design changes.

Production of the CZ 511 ended in 2006 after roughly 23,097 rifles, though Ceska Zbrojovka kept the model formally listed until its replacement, the CZ 512, arrived in 2010.^2,1 Because no new CZ 511 rifles have been built since, every unit on the market today is a used or collector example, and the CZ 511 price on secondary markets in the United States now runs from roughly $250 to $550 depending on condition and included accessories, well above what most comparable discontinued .22 LR rifles command.⁴

The Telescoping Bolt Inherited from the ZKM 581

The CZ 511's action is a direct carryover from the ZKM 581, the rifle designed by brothers Josef and František Koucký in the mid-1950s for Zbrojovka Brno.^2,5 Rather than a plain fixed bolt riding on guide rails, the design uses a telescoping bolt that partially encloses the recoil spring and guide rod inside the wooden stock, an arrangement the manufacturer's own historical materials describe as an ingenious system that smooths the recoil impulse compared with a simpler blowback bolt of the same weight.² The barrel itself is cold hammer-forged with a 1-in-16-inch (1:16) rifling twist, a detail confirmed by hands-on reviews of surviving examples and one of the clearer signs of the rifle's above-average build quality for its price class.³

The CZ 511 weighs about 2.5 kilograms (5.4 to 5.5 pounds) empty, close to the 2.6-kilogram figure recorded for the original ZKM 581, and it carries a barrel commonly listed at 20 to 22 inches (roughly 508 to 559 millimeters) depending on the specific source consulted, with some individual surviving rifles measured shorter after gunsmith work or export modification.^5,6,3 Muzzle velocity with standard high-velocity .22 LR ammunition runs in the neighborhood of 330 meters per second (about 1,080 feet per second), broadly typical for a rimfire semi-automatic of this barrel length and consistent with the cartridge's well-documented ballistics rather than any unusual feature of the CZ 511 itself.⁷

Standard and De Luxe Stocks, Open Sights, and the Wedge Magazine

Ceska Zbrojovka offered the CZ 511 in two stock grades. The Standard used a beechwood stock with a matte finish and light checkering, while the De Luxe (also marketed as the Lux) carried a higher-grade walnut stock with a glossier finish and more elaborate checkering on the grip and forend.^2,6 Both versions shipped with open sights, a hooded front post adjustable for elevation and a flip-type rear sight calibrated for 50 and 100 meters, and both carried an 11 mm dovetail rail on the receiver for mounting a scope, a feature the DB record confirms as optic rail support.^1,8

Every CZ 511 shipped with an 8-round detachable magazine, a reduction from the 8- or 16-round options once offered on the earlier ZKM 581.² A cross-bolt safety sits behind the trigger guard, reachable by either a right- or left-handed shooter, and the whole action strips down with minimal tools, a detail collectors and gunsmiths writing about surviving BRNO- and CZ-branded .22 rifles regularly single out as a hallmark of Czechoslovak rimfire engineering from this era.⁹

Set against its best-known American counterpart, the Ruger 10/22, the CZ 511 takes a much more conventional approach to feeding. Where the Ruger uses a compact rotary magazine that sits flush inside the stock, the CZ 511 relies on a straight, pressed-steel box magazine that protrudes below the receiver, a simpler but visually bulkier solution.^3,10 Several UK reviewers who have shot both rifles side by side have argued the CZ 511, with its heavier all-steel construction and cold hammer-forged barrel, is mechanically the better-built of the two, even though the Ruger vastly outsold it worldwide.³

Omnipol's Request and the ZKM 581

The rifle's origin starts with Omnipol, the Czechoslovak state foreign-trade agency, which in the 1950s asked Ceska Zbrojovka's predecessor, Zbrojovka Brno, for a new semi-automatic .22 LR rifle aimed largely at export markets.⁵ Brothers Josef Koucký and František Koucký, veteran Czechoslovak arms designers who had already worked together on submachine guns and automatic rifles since the 1930s, took on the project and produced the ZKM 581 in 1956 to 1957.^11,12 The model name itself records the design team, ZKM standing for Zbrojovka, Koucký, Malorážka (company, designer, small-bore rifle), a naming convention the Koucký brothers used across several of their Brno-era designs.⁵ The same Koucký partnership later went on to design the CZ 75 pistol, one of Ceska Zbrojovka's best-known products, giving the CZ 511's design origins an unusually direct link to the company's most famous handgun.¹¹

Serial production of the ZKM 581 began in 1958 at what was then called the Jan Šverma Works, Zbrojovka Brno's name under Czechoslovakia's communist government, with an initial batch of 5,620 rifles.⁵ Some early ZKM 581 rifles carried a Z marking on the receiver, denoting a Czechoslovak Ministry of Defense contract for the state paramilitary training organization Svazarm, which used semi-automatic .22 LR rifles like the ZKM 581 for civilian marksmanship instruction rather than combat.⁵

The Move to Uherský Brod and the CZ 511 Facelift

Because of what Ceska Zbrojovka's own company history calls a delimitation of firearms production, assembly of the semi-automatic .22 LR rifle line moved from Brno to Ceska Zbrojovka's Uherský Brod plant, with production there beginning in 1964.^2,5 Total ZKM 581 output reached 28,981 rifles before the last one was assembled in 1979, the great majority of them, some 14,091 units, exported through Omnipol to buyers outside Czechoslovakia.⁵

Even before ZKM 581 production wound down, Ceska Zbrojovka had a facelifted, lighter successor ready, and that update became the CZ 511, introduced around 1979.² The core telescoping-bolt blowback action carried over essentially unchanged, but the CZ 511 trimmed weight and standardized the magazine at 8 rounds rather than offering the ZKM 581's earlier 16-round option.² The CZ 511 went on to outlast its predecessor by a wide margin, remaining in the Ceska Zbrojovka catalog for almost three decades and reaching a total of roughly 23,097 rifles by the time the last one left the factory in 2006.²

Discontinuation and a Collector's Piece in the United States

Ceska Zbrojovka briefly halted CZ 511 exports to the United States around 2001, then resumed shipments a few years later once it became clear American demand for the rifle had not gone away.¹ By the time production ended in 2006, and formally when the CZ 512 succeeded it in 2010, the CZ 511 had already built a reputation among American shooters as an unusually well-made, all-steel alternative to the far more common polymer- and aluminum-framed .22 LR rifles on the market.⁴ That reputation has only strengthened since, and used CZ 511 rifles are now treated as a genuine collector's item in the United States, commanding prices well above typical secondary-market values for a discontinued plinking rifle of its era.^4,3

• CZ 511 Standard, a beechwood stock with a matte finish and minimal checkering, the more common configuration on the used market.²
• CZ 511 De Luxe (Lux), a higher-grade walnut stock with a glossy finish and more elaborate checkering, sold as the premium option within the same action and specifications.^2,6
• ZKM 581, the direct predecessor built at Brno and then Uherský Brod from 1958 to 1979, sharing the same telescoping-bolt blowback action but offered with an 8- or 16-round magazine rather than the CZ 511's standardized 8-round magazine.^2,5

The direct successor, the CZ 512, is not a CZ 511 variant in the strict sense but a full redesign developed with Ceska Zbrojovka's Slavičín design office, adding a polymer trigger housing, a lightweight aluminum upper receiver, and the ability to switch a single action between .22 LR and .22 WMR by swapping barrel, bolt, and magazine.² Ceska Zbrojovka also reportedly prototyped a fully ambidextrous CZ 512 variant, with a swappable charging handle and ejection port, though that version never reached production.²

Because the CZ 512 shares so little hardware with the CZ 511 beyond the general layout, most collectors treat the two as separate rifle families rather than a single continuous model line, unlike the closer kinship between the CZ 511 and the older ZKM 581.² That distinction matters to buyers, since a CZ 511's original magazine, sights, and stock hardware will not fit a CZ 512, and shoppers searching for CZ 511 parts online need to filter out the newer, unrelated model carefully.²

The CZ 511 was never adopted as a standard-issue military rifle by any national armed force. Its clearest documented government-linked use traces back to its ZKM 581 predecessor, procured in limited numbers under Czechoslovak Ministry of Defense contracts for Svazarm, the state-run paramilitary sport-shooting and civil-defense training organization, rather than for any combat role.⁵ The CZ 511 itself was sold almost entirely as a civilian rifle, through Omnipol's export network during the Cold War and later through ordinary commercial sporting-goods channels once Ceska Zbrojovka opened up to Western markets after 1989.^1,2

Today, the overwhelming majority of CZ 511 rifles still in circulation sit in private civilian hands, concentrated among rimfire collectors and small-game hunters in the Czech Republic, the United Kingdom, and especially the United States, where import demand kept the rifle in Ceska Zbrojovka's US catalog well into the 2000s.^1,4 There is no equivalent to the Ruger 10/22's documented security-force use anywhere in the CZ 511's history, a rifle that stayed a plinking and training gun from its Svazarm-linked origins right through to its final years on dealer shelves.³

Rimfire shooters comparing the CZ 511 almost always end up talking about the American-made Ruger 10/22, the far more commercially successful rimfire semi-automatic that dominated the same plinking and small-game market on the other side of the Atlantic.^3,10 Both rifles use simple blowback actions chambered in .22 Long Rifle, and both were designed as affordable, low-recoil training and hunting rifles rather than tactical arms, but they diverge sharply in construction and magazine philosophy.^3,10

The CZ 511 is built almost entirely from steel, with a cold hammer-forged barrel and a telescoping-bolt design descended from a 1950s Czechoslovak military-adjacent development program, while the Ruger 10/22 uses an aluminum-alloy receiver and a patented 10-round rotary magazine engineered specifically to eliminate rimfire feeding jams.^3,10 Several hands-on reviewers who have fired both rifles have judged the CZ 511 the more solidly engineered of the two, citing its all-steel build and factory-fitted cold hammer-forged barrel, even though the Ruger 10/22's rotary magazine and enormous aftermarket support let it far outsell the CZ 511 worldwide.³

That aftermarket gap decides most of the practical ownership experience today. A shooter who wants to keep shooting a CZ 511 for decades has to protect the original magazine that came with it, since replacements are hard to find, while a Ruger 10/22 owner can buy new factory or third-party magazines, barrels, and stocks indefinitely.^3,10 Against the CZ 511's own bolt-action sibling, the CZ 452, the comparison is really about mechanism rather than market position, the semi-automatic CZ 511 trades the CZ 452's single-shot cycling and slightly better inherent accuracy for faster follow-up shots, the usual trade-off between bolt-action and semi-automatic rimfire rifles of the same era.³

Is the CZ 511 still in production? No. Ceska Zbrojovka ended CZ 511 production in 2006 after roughly 23,097 rifles, and formally discontinued the model in 2010 when the redesigned CZ 512 took its place in the catalog.^2,1

What caliber is the CZ 511? The CZ 511 is chambered in .22 Long Rifle, a rimfire cartridge, and it was never offered in any other chambering.^1,3

How much is a CZ 511 worth today? Used CZ 511 rifles in the United States now sell for roughly $250 to $550, with condition, stock grade (Standard versus De Luxe), and whether the original magazine is included driving most of that range.⁴

Is the CZ 511 better than the Ruger 10/22? Neither is straightforwardly better. The CZ 511 is generally regarded as the more solidly built rifle, with an all-steel action and cold hammer-forged barrel, while the Ruger 10/22's rotary magazine and vast aftermarket make it far easier to keep shooting and customizing long term.^3,10

Where can I find CZ 511 magazines? Original factory magazines are scarce, since the CZ 511's wedge-shaped magazine profile does not interchange with other CZ rimfire rifles and no manufacturer has resumed production of it since the rifle was discontinued.³