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The history of the Brno company or Czechoslovak Armory (Československá zbrojovka) as it was known prior to WWI, began in the city of Brno in the Czech Republic, formerly known as Czechoslovakia. In 1918, the Brno Rifles factory was established. Before 1918, Brno Plant was an arsenal located in the Austro-Hungarian Empire. Brno started producing Mauser 98 rifles in 1920 after buying excess weapons and equipment from Mauser-Oberndorf. These Brno-produced Mausers had a 98/22 designation stamped onto the receivers marking the year of production.
In the period between WWI and WWII, Brno collaborated with the Royal Small Arms Factory in Enfield, England to develop a well-known Bren light machine gun. They produced weapons for the Czechoslovakian and German armies during World War II. After the war, the company was nationalized by the Czechoslovakian government and renamed Zbrojovka Brno. While it was under socialist control until 1989, it switched to the production of sporting weapons which quickly gained a reputation for their reliability. For some time, the company also produced light artillery and several other products such as tractors, typewriters, and early computers.
During the years they presented numerous models of weaponry such as the ZB vz. 26 light machine gun, ZB-50 heavy machine gun, the MG34, several bolt action rifles, ZKM and ZH series, ZKR 551 handgun etc.
The company was privatized in 1990, just three years before Czechoslovakia split into the Czech Republic and Slovakia. Zbrojovka Brno was acquired by Česká zbrojovka (CZ) in 2008. With the new ownership, they agreed to a longer lease, which allows the business to continue production in rented facilities. They still make high-end products for hunting and competition, including pistols, single-shot and double rifles, combination rifles, as well as over/under shotguns.
Brno ZKK is a series of Czech bolt-action rifles designed and introduced in the early 1960s as a replacement for the vz. 52 rifles. There are three models available in the series, namely ZKK 600, ZKK 601 and ZKK 602, each with a different action length and chambered for a different caliber group. The three models also have somewhat differently shaped stocks; however, apart from those differences, they are structurally the same.
Brno ZKK 600 is the standard-action version of the three models. The rifle has an internal box magazine with a capacity of up to five rounds, a long claw extractor, and a Mauser-style breech system. High-grade steel makes up the controlled-feed action system, which has a bolt with three locking lugs: two bigger, main lugs at the bolt head, and a third, smaller safety lug underneath the bolt handle that serves as a backup and adds extra safety when the bolt locks into the receiver.
Behind the bolt handle on the rear right side of the receiver, there is a two-position safety lever that locks the trigger mechanism while also blocking the bolt in the closed position. Additionally, the protrusion on the rear part of the striker from the bolt shroud also indicates when the rifle is cocked, and the striker is activated. Both standard and single-set triggers are available. Users can manually adjust the weight of the trigger pull by turning the screw accessible through the upper side of the receiver when the bolt is removed.
The front sight is mounted on the ramp and secured in place by a spring-loaded catch allowing for easy and fast removal. The rear sight which is adjustable for windage is attached to the dovetail and secured by indentation. Brno ZKK 600 comes with 19 mm milled dovetail grooves at the top of the receiver which are suitable for installing scope mounts.
Figure 1: Brno ZKK 600, chambered for .30-06 Spr. (Source: https://greatnorthgunco.ca/product/brno-zkk-600-30-06-6/)
The rifle is chambered for the following calibers:
6.5x55
.270 Win.
7x57
7x64
.30-06 Spr.
8x57 S
Brno ZKK 600 comes with milled 19 mm dovetail grooves at the top of the receiver which are suitable for installing scope mounts. The recoil notch is positioned on the left side of the rear mounting surface.
Figure 2: The receiver of Brno ZKK 600, chambered for .30-06 Spr. (https://greatnorthgunco.ca/product/brno-zkk-600-30-06-6/)
A: /
B: /
C: /
D: 19 mm
BHU: 0 mm
Ø: /
R1: Prisma 19
R2: Prisma 19
For one-piece mounts to fit on a rifle, mounting surfaces on these rifles must match in every dimension. Rifles that have one-piece mounts interchangeable with Brno ZKK 600 are the following:
Brno CZ 537
Brno ZKK 601
CZ 550 Standard
Brunner 19
CZ 557 LA
Brno ZG 47
Brno 721
Brno 722
For two-piece mounts to be interchangeable, the mounting surfaces of the rifle must match in every dimension except the action length which can vary. This is because of the distance between the two pieces of the mount which is not fixed. If the Scope mount comes with a recoil stopper that cannot be removed, it must match the position of the notch on the receiver. Rifles that have two-piece mounts interchangeable with Brno ZKK 600 are the following:
CZ 550 Magnum
Brno ZKK 602
CZ 557 SA
These scope rings with bases are made by the German company MAK. They have a thirty-year warranty and are constructed of premium steel.
Order MAKfix Rings with Bases
Installing detachable sight mounts on the rifle is quick and simple, making them particularly handy for maintenance. This two-piece repeatable pivot mount made by the German company EAW is a suitable choice for your Brno ZKK 600.
Check out EAW pivot mount
If you are considering converting your 19 mm dovetail to Picatinny, this mounting solution might suit your needs. The Rusan Picatinny rail is made in Croatia and comes with a ten-year warranty.
Click here for Rusan Picatinny rail
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 scope 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: [email protected]
