<Tr> <Td> </Td> <Td> This section needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (February 2011) (Learn how and when to remove this template message) </Td> </Tr> <P> The CZ 75 is a short recoil operated, locked breech pistol . It uses the Browning linkless cam locking system similar to that used in the Browning Hi - Power pistol, where the barrel and slide are locked together on firing, using locking lugs milled into the barrel mating with recesses in the roof of the slide . An enclosed cam track integral with the barrel is actuated by the slide release lever's transverse pin . After the first few millimetres of the recoil stroke, the barrel is cammed downwards at the rear, enabling the slide to continue the recoil stroke and eject the spent cartridge . </P> <P> Most models have the capability of being fired in both single and double - action modes, and feature a frame - mounted manual safety . Some recent models have a decocking lever that doubles as a manual safety . Starting in the early 1990s, all CZ 75s have been made with firing pin blocks, designated by the letter B (as in CZ 75B). </P> <P> The CZ 75 was one of the first high - capacity 9mm pistols with a manual safety similar to that of the Browning Hi - Power . This allows the CZ 75 to be carried with the hammer cocked with safety applied and a round chambered, ready for use simply by switching the safety off, a configuration known as condition 1 . It is somewhat unusual for double - action pistols to have this "cocked and locked" type of safety; most such as the Walther P38 and the Beretta 92F have a combination safety / decocking lever (as do some later versions of the CZ 75). The trade - off of this configuration is that to uncock the hammer for a double - action first shot, the hammer must be dropped manually by pulling the trigger while lowering the hammer with the firer's thumb under control . Once lowered in this manner, a double - action first shot can be achieved in a similar manner to other double - action pistols without actuating any controls . Subsequent shots will be single - action unless the hammer is again manually lowered . </P>

What does the b stand for in cz 75b
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