This gun on one of the German sites of antique weapons is estimated at 5,400 euros. Attempts to improve the accuracy of flintlock pistols at the end of the 17th and the beginning of the 18th century led the gunsmiths to the idea that this could be achieved by breech-loading the weapon. The bullet placed from the breech is not deformed in the process of loading, even though the dimensions are almost equal to the diameter of the barrel. Breech-loading can reduce the breakthrough of powder gases between the inner walls of the barrel and the bullet. The bullet fits tightly into the rifling and maintains a stable trajectory during the flight. It remained to answer the question, how to perform breech-loading flint weapons? One of the constructive solutions was the use of interchangeable charging chambers in weapons. A similar in design breech-loading pistol with a flintlock is shown in the photo. The total length of the weapon is 54 mm. Rifled barrel, barrel caliber 14.5 mm. In the lower part of the forearm are installed the ramrod rings, in which a wooden ramrod with an iron tip is placed. This breech-charging flintlock pistol with a removable charging chamber was made by Johann Christoph Peter from Carlsbad at about the beginning of the 18th century. On the right side of the castle, behind the trigger there is the mark of the master in the form of a text: “IC Peter”. The front of the trigger guard is the lever unlocking the barrel. The wooden elements of the pistol's box are made of walnut and covered with carvings. The shank of the handle is reinforced with iron lining with side "rays". Metal parts of weapons: lock, lock mask, barrel, breech covered with engraving. Breech flint pistol for reloading "breaks". The axis is located at the lowest point of the bed and is a transverse screw. At the top of the barrel there is a protrusion that fits into the corresponding cutout of the plate at the back of the frame, where it is fixed after closing. On the right side of the barrel there is a slot for installing a protrusion of a removable removable chamber. In the box on the right, a groove is made in an array of wood to accommodate part of the keypad of the interchangeable chamber. Replaceable charging chamber flint pistol is a breech. On the right side of the chamber there is a part of the keypad with a powder shelf, a flint - a powder shelf lid and a spring for adjusting. The charging chamber in the rear part is welded; at the front cut, the barrel bore has 8 grooves. The outer cross-section of the charging chamber resembles a cone, which provides a reliable obturation and ease of removal and installation of the camera in the weapon. It is not entirely clear whether the gunsmith originally produced one that was extracted from the barrel, only with the aim of providing breech-loading weapons. Or were there several cameras to increase the speed of loading the weapon, but later others were lost?