The ZK 420-S was a Czech wartime development very similar to the M1 Garand rifle, produced in 1945. The primary difference was the use of a rotating bolt very similar to what would be used in the Soviet AK-47 several years later. It likely influenced the development of the M14 rifle, though it failed to gain commercial success.

1942 年，捷克推出了一款使用 7.92x57mm 弹药的半自动步枪--ZK420。这款步枪由库斯基兄弟研发。 在结构和外形上都参考了美国的 M1加兰达步枪 。 ZK420在二战期间继续发展，于 1945 年推出ZK420-S。字母“S”可能表示“Special”。ZK420-S更类似美国的 M14步枪 。

在这时期的捷克进行研发的武器共有两款，其一为ZK-392型步枪，其二为ZK-420型步枪，两者特征是枪身上的Bron-ZK铭刻标识，皆是由库斯基兄弟设计的武器，其中武器头像的K就来自于这两位设计者，这两位在后来还主导了享誉世界的CZ-75型手枪的设计。 这两款武器的前者是在捷克沦陷后不久开始开发的，有借鉴过其他步枪结构的意思，因为他的核心结构与之前的捷克制武器均不同，采用了一种旋转闭锁式的枪机和长行程活塞导气式的自动原理，这赋予了它开闭灵活和可靠 …

2024年10月2日 · Very rare Czech ZK420-S designed by brothers Josef & Frantisek Koucky. The rifle was designed in 1942 but due to WW2 the rifle wouldn’t be produced until after the war. This rifle design incorporates design features of other self loading rifles of the period such as the earlier Czech semi autos & the M1 Garand.

2017年4月7日 · The ZK-420S is an experimental Czech rifle that is virtually unknown today, but which was remarkably influential, bearing significant elements of the Garand and several other Czech designs, and influencing the M14 and Kalashnikov rifles.

2022年11月23日 · Finally, we have a dedicated shooting video. And we will start with the BRNO ZK 420-S. I have already made two videos about this rifle where you can find all the essential information. Here are...

Cal. 8mm. 23" bbl. Extremely rare Czech ZK420-S as designed and manufactured by brothers Josef and Frantisek Koucky. Once can see that these designers must have examined the American M1 Garand rifle and perhaps also the US M1 carbine as this gun combines several familiar features.

2024年10月31日 · Very rare Czech ZK420-S designed by brothers Josef & Frantisek Koucky. The rifle was designed in 1942 but due to WW2 the rifle wouldn't be produced until after the war. This rifle design incorporates design features of other self loading rifles of the period such as the earlier Czech semi autos & the M1 Garand.

This Czechoslovakian model ZK420-S was an experimental semi automatic rifle made by the Czech that appears to have incorporated some features of the American M1 as well as similarities to the German K-43.

The ZK-420S is a Czechoslovakian semi-automatic rifle. While it was not accepted for service as the standard Czechoslovakian service rifle, it's sold commercially and can also be purchased in .30-06, 7x57mm Mauser, 7.5x55mm Swiss, or 6.5x55mm Swedish. The ZK-420S uses a trigger mechanism and gas operating system taken from the M1 Garand.