CZ 452

CZ 452 or ZKM-452
CZ 452 with a fitted suppressor
Type	Hunting/Target rifle
Place of origin	Czech Republic
Production history
Designer	Josef Koucký (1904-1989)
Designed	1943-44
Manufacturer	Česká Zbrojovka Uherský Brod
Produced	1954-present
Variants	American, Varmint, Lux, Scout, Silhouette, Style, FS
Specifications
Barrel length	16 in (410 mm) to 28.6 in (730 mm) dependent on model
Cartridge	.22 Long Rifle, .22 WMR, .17 HMR, .17 HM2
Action	Bolt-action
Effective firing range	200 meters
Feed system	5 rounds (standard); 10- and 25-round magazines and single-shot adapters also available
Sights	open (some models); 3/8" or 11 mm dovetail rail for optional optical sights

The CZ 452 is a repeating bolt-action, magazine-fed, rimfire rifle manufactured by the Czech firearms manufacturer Česká Zbrojovka Uherský Brod (abbreviated "CZ-UB") (English: Czech Weapons Factory - Uherský Brod)and imported into the United States by CZ-USA. Most versions of the 452 rifle series were discontinued in 2011 and replaced by the CZ 455, although CZ continues to offer the CZ 452 Scout as well as the 452 American in a left-hand-only model, with the bolt located on the left side of the rifle.

During its production life, CZ produced the 452 in available in several variations (American, Varmint, Lux, Scout, Silhouette, Style, and FS) with varying barrels, stocks, and sight in calibers (.22 Long Rifle, .22 WMR, .17 HMR, and .17 HM2). All CZ 452 rifles of recent manufacture have hammer forged, hand-lapped steel barrels threaded into the receiver frame and a trigger that is adjustable for weight of pull.

First introduced in 1954 as the Model 2 (ZKM 452), the Model 452 is a refinement of the CZ Model 1 (ZKM-451) .22-calibre rimfire bolt-action training rifle that first appeared in 1947. ZKM is an acronym for Zbrojovka-Koucký-Malorážka, the rifle's manufacturer ([Česká] Zbrojovka), designer (Josef Koucký) and Malorážka - for rimfire rifle). The Model 1 or ZKM-451 was developed on the request of the occupying German authority in 1943-44, when a very few rifles were built as fully stocked Mauser 98k type trainers. The receivers of these early .22 training rifles were marked tgf (Tschechische Gewehr Fabrik - German for Czech Rifle Factory) by the German Heereswaffenamt. Because of wartime requirements for combat weapons, assembly and production was halted on all .22 training rifles, leaving a large stockpile of parts and receivers at war's end. After the war, these parts (some of which still have the tgf code) were used along with new barrels and stocks to make the Model 1.