CZ 557 LA

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Repeatable Mounts

Pivot Mounts

About the CZ

CZ firearms or CZ (which stands for Česká zbrojovka) is based in Uhersky Brod, a small town in the southeastern Czech Republic. CZ has its start in 1936 as a subsidiary of CZ Strakonice, which was itself a subsidiary of Zbrojovka Brno. The arms industry was growing quickly in Czechoslovakia at the time, and Uhersky Brod was chosen since it was secluded and lay beyond the range of German bombers, which, in case of an invasion, would target the arms factories first. The factory initially mostly produced pistols and small-caliber rifles; however, when German forces occupied Czechoslovakia in 1939, the company was renamed to Böhmische Waffenwerke and was forced to make machine guns, such as LK-30 and MG-17, for the German military.

After the end of World War II, the Soviets gained control of the region and the company was nationalized by the communist government, producing air weapons, machine guns, submachine guns, motorcycle and sewing machine parts. In 1957 the company started production of the Model 58, and in 1961 they introduced the world-famous Model 61 Škorpion machine pistol. The year 1975 marked the release of yet another popular model, the CZ 75 pistol which many manufacturers have since used as basis for their own products.

CZ once again became an independent company in 1992 following the fall of the Soviet Union. In the decades after, they have continued production of a variety of weapons seizing the market of law enforcement and military firearms with service pistols, assault rifles and grenade launchers with which they also helped equip the Czech army. They have strived to widen their presence on the international markets, opening a facility for assembly and repairs of CZ pistols in Peru and spreading production of their firearms (certain models of the CZ-P10 pistol) to the United States in 2019. As of 2021 they employed around 1500 workers.

CZ 557 LA Rifle Review

CZ 557 is an upgrade of the popular CZ 550 rifle with some notable differences. 550 featured a controlled-feed action but that is no longer the case with 557 which is equipped with a cylindrical push-feed bolt with two locking lugs, a short extractor, and a plunger ejector. The barrel is cold hammer-forged and factory-lapped which provides greater accuracy. While CZ 550 had a set trigger, the 557 comes equipped with a fully adjustable trigger mechanism. It features an internal box magazine with a hinged floorplate while the release is located on the front of the trigger guard. Depending on the variant, it came with a stock made of walnut, beech, polymer or laminated wood. The CZ 557 series was discontinued in 2021. It was sold in short-action and long-action models.

CZ 557 LA

Figure 1: CZ 557 Sporter .30-06 Spr. Source: https://www.northwestfirearms.com/threads/cz-557-sporter-30-06-w-carbon-fiber-manners-stock.301349/

CZ 557 LA is chambered for the following calibers:

6,5×55 SE
7×64
.30-06 Spr.
8×57 JS

Caliber choice depends on the variant.

CZ 557 LA is available in the following variants:

Lux
Lux II.
Lux LH
Eclipse
American LH
Predator
Sunset Valley
Green Valley
Grey Valley
Night Sky
Synthetic
Synthetic S
Eclipse
FS

CZ 557 comes equipped with a 19 mm dovetail rail milled on the front and rear of the receiver. The recoil notch is located under the rear mounting surface, to the left. The dovetail is flat on top.

CZ 557 LA

Figure 2: CZ 557 Predator .30-06 Spr. long action receiver

CZ 557 LA

Figure 3: CZ 557 receiver

A: /
B: /
C: /
D: 19 mm
BHU: 0 mm
Ø: /
R1: Prisma 19
R2: Prisma 19

Which rifles have interchangeable mounts

Two-piece mounts

For two-piece mounts to be interchangeable the mounting surfaces of the rifles must match in every dimension except the action length which can vary. This is because the distance between the two pieces of the mount is not fixed. If the mount has a recoil stopper, it must fit the recoil notch on the receiver. Rifles that have two-piece mounts interchangeable with CZ 557 LA are the following:

Brno ZKK 600
Brno ZKK 601
Brunner 19
CZ 550 Standard
CZ 537
CZ 555
Brno ZG 47
CZ 557 SA
Brno ZKK 602
CZ 550 Magnum

One-piece mounts

The necessary condition for rifles to have one-piece mounts interchangeable is that the mounting surfaces of these rifles match in every dimension. Rifles that have one-piece mounts interchangeable with CZ 557 LA are the following:

Brno ZKK 600
Brno ZKK 601
Brunner 19
CZ 550 Standard
CZ 537
CZ 555
Brno ZG 47

Our recommendations for mounts

Fixed mounts

Here we recommend a two-piece mount from MAKipp since it is relatively practical and inexpensive.

Detachable repeatable mounts

This detachable repeatable mount from INNOMOUNT is both good-looking and high-quality.l

Picatinny rails

We recommend this Picatinny rail from Optik Arms since it is sturdy and inexpensive.

Help us build our riflescope mounts database

If you happen to own this or any other rifle, we would appreciate it if you could help us expand our database by sending us some photos of the rifle receiver (the bare mounting surface of the rifle without the mounts installed). For your help, our company offers a fair return in terms of practical rewards.

Please send us an email for more information. You can contact us here: info@optics-trade.eu

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Rusan Pivot mount for CZ 550/Brno ZKK, Pard NV008, one-piece

$259.00

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Rusan Pivot mount without bases for CZ 550/Brno ZKK, Pard NV008, one-piece

$195.00

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INNOmount QD Mount for CZ 550/557, Pard NV008

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VIDEO

There are two terms found for similar thing: quick release scope mounts and quick detach scope mounts. Term quick release scope mounts is used mostly in Europe and quick detach scope mounts is used mainly in USA, although they mean the same thing. With these terms we describe a scope mount that can be quickly removed from the rifle in the field without using any tools and quickly attached back on the rifle when needed.

Main advantages:

possibility to use multiple scopes on the rifle,
easy transportation of the scope and the rifle separately,
if scope fails, it is possible to immediately detach it and use iron sights.

FIXED vs DETACHABLE scope mounts

Fixed scope mounts are mounted to the rifle with screws and sometimes even with glue. This means that it is impossible to attach or detach the scope mount using bare hands without using tools. It also means that they are not meant for constantly being attached on or detached off the rifle. Once you screw the mount on the rifle, it normally stays there for a longer period of use.

Detachable scope mounts offer possibility to attach or detach them without using any tools. This is extremely handy while transporting the rifle and the scope separately and it also offers multiple solutions of different optics on the same rifle. Detachable scope mounts can be attached or detached from the rifle in a matter of seconds, using bare hands.

Fixed Mount

Fixed Mount

DETACHABLE vs REPEATABLE scope mounts

It is important to know and understand expressions “detachable” and “repeatable” while talking about scope mounts. Term detachable scope mounts implies scope mounts that can be quickly attached or detached without using any tools. However, when you detach this kind of mount and attach it back on the rifle, it is recommended to zero the rifle before using it again. Procedure of detaching and again attaching the mount will probably need a sighting in before next shooting, because mount will not be secured on the rifle in the perfectly same position and conditions as it was before detaching it off the rifle.

On the contrary, repeatable scope mounts are most sophisticated mounts. These scope mounts are also detachable, however – they provide removing scope from the rifle and attaching it back again without zeroing the rifle every time. This means that they are made more precisely and that they are offering a possibility of using different optical sights / scope on the same rifle. These mounts are ideal for hunters who can use optical and iron sights interchangeably, depending on the needs in different situations. With the repeatable scope mounts, it is useful to keep them oiled as well as the upper part of the rifle, so that repeatability is more ensured. With a touch of oil, the repeatability might be better, because parts of the mount will always return to their previous locations.

Different types of repeatable scope mounts:

Pivot mounts,
Dentler mounts,
Picatinny repeatable mounts,
12 mm dovetail repeatable mounts (for break barrel rifles, such as Steyr Duett, Blaser B750, Fair Combi, Fair SLX 800, Bettinsoli rifles, etc.),
Original repeatable mounts, made by manufacturers of rifles for their rifles (Blaser mount, Sauer SUM mount, Mauser M03 mount, Steyr Monoblock mount, etc.).

Repeatable Mount

Repeatable Mount

TIP OFF / ROLL OFF vs SLIDE ON mounts

Nowadays, there are a whole lot of different possibilities, made for attaching riflescopes on the rifles. There are also a lot of different expressions, having the same meaning. It is good to know that tip off and roll off mounts are basically the same thing. They represent quick release scope mounts for dovetails and rails which can be rolled or tipped off the rail vertically to the side of the rail. On the contrary, there are also slide on mounts available on the market. They represent quick release scope mounts that can be slided on or off the rail or dovetail from front or rear side of the rail / dovetail. All of these expressions are mainly used for separate rings that can be attached to the rails / dovetails. As far as functioning the rifle, it does not matter which one of these mounts you choose – tip / roll off or slide on mounts. If they are installed correctly, they are all going to work. However, the main difference between them is the principle of attaching them on rails on dovetails.

Slide On Mount vs. Roll Off Mount

Slide On Mount vs. Roll Off Mount

CZ 557 LA

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About the CZ

CZ 557 LA Rifle Review

CZ 557 LA is chambered for the following calibers:

CZ 557 LA is available in the following variants: