CZ Yearbook 2019 /eng

52 | | 53 ever, the truth is that the de- sign legacy of the CZ 452 ZKM limited the options to modify the trigger mechanism pa- rameters. CZ has already managed to solve this problem in several variants in the CZ 455 family. As a result, the company has intro- duced a new trigger mechanism for the CZ 457 se- ries. It allows the user to adjust the trigger pull weight within a very favourable range of 8 and 15 N, the trigger travel may be adjusted within 0.5-7 mm. Ba- sically, the shooter may choose to use the gun at a common training level as well as that of a target special. One e l eme n t which i s of ten overlooked but which plays an important role in accuracy is the weight of the striker. In comparison with previous models, the weight of strikers in CZ 457 rimfire ri- fles has been r educed by more than 60% , resulting in a faster strike and at the same time less shock and vibration when fired. Where stocks are concerned, there has been a great improve- ment in all long guns from CZ, reflected in the new rimfire ri- fles. For CZ 457, the company has developed a  new type of bedding which allows consist- ent tightening of the screws in the barrelled action within the stock. Improve- ments have also been made where ergonomics are con- cerned, the grip on the CZ 457 is thus once again a bit more comfortable than on its predecessors. Improved user properties In the past few years, CZ has advanced its technologies con- siderably, such as procedures for the surface treatment of metal parts. The company’s new products, including the new CZ 457 series, are thus treated with one the most durable anticorrosion surface treatments on the market. In addition, users will undoubt- edly appreciate the improved trigger travel , achieved by re- designing the receiver and the bolt. Another advantage is the notably reduced turning angle of the bolt handle (30° less than previous CZ mod- els). Thanks to this, the gun enables comfortable handling even with a riflescope. And while focusing on this gen- erational upgrade, CZ has also made improvements in the quality of work with regard to smaller parts, such as the trig- ger guard, magazine f rame, rear part of the bolt, new Weav- er rail interface, etc. As has already been mentioned, the im- portant benefits of the previous CZ rim- fire rifle genera- tion have been retained: the modular system allowing an easy replacement of barrels and changing of cal- ibres, and compatibility of the barrels and magazines with the CZ 455 series. Generational upgrade The CZ 457 rimf ire rifles are replacing the CZ 455 series. In addition to replacing the variants, such as the LUX, VARMINT, AMERICAN and JAGUAR, the advantages of the new design will also be applied to completely new models with unique pa- rameters, which CZ has not offered before. For example, the design of the CZ 457 ROYAL model in .22 LR, .22 WMR and .17 HMR calibre is closely related to hunting rifles. Its thin-walled barrel with no mechanical sights is either 412.5 or 525 mm long. The premium walnut stock whose beautiful grain is emphasised by oiling features a decorative tip and Safari style swivels. Its design is based on classic stocks pop- ular in the Commonwealth countries: its typical features are a straight comb, round cheek- piece and slim forend. A n o t h - er new mode l whose design has been based on those rifles is the CZ 457 PRE- MIUM . It will especially appeal to owners of CZ 557 or CZ 527. This rimf ire rifle has a pre- miumwalnut stock with a Eu- ropean style cheekpiece and once again features a decora- tive tip. The thin-walled hunt- ing barrel is 630 mm long and is equipped with iron sights – a f ront sight with fi- bre optics and a tangent rear sight adjustable f rom 25 to 200 m. There is also a muzzle thread for the attachment of a silencer. The great accuracy potential of the new series is fully reflected in the CZ 457 MTR , a version in the .22 LR calibre featur- ing a match chamber with di- mensions on the bottom limit of allowable parame- ters. In combination with the other innovations, the guar- anteed accuracy at 50 m is onl y 15 mm! The hunt ing variant in .17 HMR calibre is ex t r eme l y accu r a te too . Different level Česká zbrojovka a.s. claims that the new CZ 457 family repre- sents a new paragon of a modern rimfire rifle in its price range without an equal rival on the cur- rent global market.Speaking f rom our own experience, we can certainly confirm that the properties and performance of the new CZ rimfire rifles really are a different level – we ha- ven’t been able to find a rival product that could measure up to them. Nevertheless, the arrival of the CZ 457 also means the end of rimf ire rifles based on the tried and tested concept of the Koucký brothers. Such a fare- well is always poignant, the more so that in this case it is the end of an era, a very long and exceptionally successful one. Saying that, we f irmly believe that without a doubt, these brilliant designers would have been very happy with the new generation of their fore- runners. They always relished new ideas and put great em- phasis on the quality of man- ufacture – and in this respect, the CZ 457 rimfire rifles give us much to be proud of. CZ 457 ROYAL with walnut stock and 16“ barrel CZ 457 MTR in .22 LR cal. CZ 457 PREMIUM