CZ 452/455 User Manual

• The small-bore rifles CZ 452 ZKM and CZ 453 are classic repeating arms of sturdy design. They are manufactured in several versions.
  • Use only factory-manufactured ammunition of appropriate caliber, which are in compliance with CIP regulations or SAAMI. The use of other cartridges could damage the firearm or cause injury to the shooter.

• To engage the Safety, shift the safety forward to its "Safety-On" position (Fig. 3) until the red dot is fully covered.
  • This procedure locks the trigger mechanism and the bolt, it is not possible to discharge a cartridge or manipulate the bolt.

• The trigger pull adjustment for the CZ 452 ZKM is carried out after removal of the stock using the adjusting nut (Fig. 5).

• The CZ 452-2E ZKM small bore rifle sights were sighted-in at the manufacturing plant at a 50 m distance. The tangent rear sight is provided with lines for 25 - 200 m aimed shooting in diversion steps of 25 m.
  • After depressing the rear sight-locking piece it is possible to shift the slide for the desired range.
  • Windage adjustment is achieved after loosing the screw (Fig. 8) on the side you want to shift the point of impact and then tighten the screw on the opposite side.
  • A full turn of the screw shifts the point of impact 5 cm (2 in.) at 50 m. Elevation correction is carried out by drifting the front sight in a dovetail. The front sight is secured in its place by a screw. The front side base is provided with auxiliary lines. Drifting the front sight by one line shifts the point of impact by 1.5 cm (.6 in.) at 50 m.
    • On the CZ 452 ZKM Scout version, windage correction is carried out by shifting the front sight in the transverse groove, and securing it in the desired position with an indentation punch.
    • Elevation adjustment is carried out by shifting of the rear sight leaf slide (Fig. 9). Shifting the slide by one increment changes the point of impact by 1.25 cm (.5 in.) at 50 m.

• If your firearm is properly used and maintained, malfunctions will rarely occur. However, if such a situation does occur please observe the following instructions.
  • If you cannot clear away any malfunction in the manner described below, entrust the rifle to a competent gunsmith for inspection and repair.

• Stripping for Cleaning - Disassembly
  • 1. Remove the magazine.
  • 2. Shift the safety to its "Off" position, in order that the bolt can be manipulated.
  • 3. Open the bolt, and after depressing the trigger to its extreme rear remove the bolt by moving it rearward.
• Disassembly of the Bolt
  • 1. Remove the bolt from the receiver as previously described.
  • 2. Keeping the firm grip of the bolt body rotate the bolt handle to the right (in the same manner as if closing the bolt in the firearm). The main spring is thus released.
  • 3. Place the striker spring support against a suitable solid object (Fig. 10) and push it a little way into the bolt body. At the same time pulling the safety up and out.
  • 4. After detaching the safety, carefully release the bolt while holding the striker spring support.
    • Be very careful when doing this disassembly procedure as the spring support is under main spring tension and its ejection could result in the loss of this part, or could cause an injury.

• Cleaning of the Rifle
  • Clean the rifle
    • Each time you use it
    • If you get your rifle wet
    • As soon as possible after shooting
    • At least once a year in a temperate climate
    • As often as once a month in a tropical climate, or other demanding environment
• Cleaning the Barrel Bore and the Cartridge Chamber
  • If the firearm has not been fired or if only a few cartridges have been fired, clean the barrel bore and cartridge chamber with a clean patch attached to a cleaning rod. Repeat, changing patches, until the last patch comes out clean.
  • When the barrel bore is very dirty, apply a gun cleaning solution using a cleaning brush. Let the solvent act for about 10 minutes (this time may vary depending on the solvent agent being used). Then thoroughly scrub out the barrel bore. Subsequently, dry the barrel bore and cartridge chamber with a clean patch and check that all powder residues or fouling have been removed. If necessary repeat this procedure.
  • The cleaning rod and the brush must be inserted into the barrel bore from the chamber, to prevent wear or damage to the muzzle. Pass the brush all the way through the barrel bore before reversing the movement. If you try to change directions with the brush in the barrel, the brush could stick.
  • Other parts of the rifle can be cleaned with a dry cloth, old toothbrush, copper bristle brush or a wooden scraper. Preserving oil or paraffin oil can be used for proper cleaning. Never use an agent designed for barrel bore cleaning. These solutions could remain in the joints, and after some time could cause corrosion. Check that cloth particles or brush bristles have not become lodged in any part of the rifle.