User manual BAIKAL MP 153

[. . . ] 2 For ensuring high corrosion resistance, the barrel bore, chamber and gas system parts (piston, gas cylinder) are chrome-plated and the valve is made of 3 The reloading system of the shotgun operates by bleeding powder gases through the gas bleeding holes which connect the barrel bore with the gas cylinder fixed to the barrel and by the recoil spring mounted on the magazine tube. 4 The retraction speed control for the movable system is mounted inside the gas cylinder and consists of the valve 6, valve spring 5 and gas cylinder nut 4. This retraction speed control allows the usage of various brands of ammunition by bleeding excess powder gas out of the gas cylinder into the air and also compensates for the effect of an ambient temperature. The barrel is locked by means of a locking lug located on the top of the bolt. [. . . ] 15 When disassembling/reassembling / loading the shotgun, keep your hands away from the movable system parts, especially after pressing the interceptor button. 1 The shotgun is set to the safe/unsafe positions by means of a safety button (Fig. Is set by pushing this button to the right, the left position of the button means the "unsafe" position. 2 The MP-153 shotgun comes with the barrel removed from the receiver and stock. to assemble the shotgun: - remove the forend nut (Fig. 2) fitted over the magazine tube 17; - remove the forend 75 from the magazine tube 17; - push the interceptor button (Fig. 3) back toward the stock; - fit the barrel 2 with its gas cylinder over the magazine tube so that its breech faces the receiver while inserting the barrel extension into the receiver 3; - after the barrel extension is inserted, move the bolt handle rearward until the bolt locks in its rear position; - insert the barrel extension into the receiver fully; - fit the forend 75 over the gas cylinder and magazine tube 17, do not force. - put the forend rear end on the ring 22 which is located on the magazine tube 17 in front of the receiver 3; - CAUTION!To increase the magazine capacity of the shotgun fitted with the magazine tube extension 11, remove the plastic sleeve 14 (which is used in the shotgun during transportation only) in the following way. Through the side holes in the magazine tube press in the plastic sleeve lugs, sink the plastic sleeve into the magazine tube so that it becomes flush with the front end of the magazine tube, and by swinging action remove the plastic sleeve while holding it from jumping out under the action of the magazine tube. - screw in the forend nut 7 or the magazine tube extension 11 so that the forend 75 locks securely in its position. Before installing the magazine tube extension which increases the magazine capacity by two shotshells, make sure it contains the spring 12 and the adapter 13. Install the forend nut and the magazine tube extension with great care; - after the barrel 2 is inserted into the receiver fully, the forend 75 is fitted over the magazine tube 17, the forend nut 7 or extension magazine tube 11 is tightened, depress the interceptor button (Fig. If on depressing the interceptor button the bolt does not move forward or the barrel and forend move longitudinally, it means that your shotgun is assembled incorrectly. Try tightening the nut further or disassemble the shotgun in the reverse order, and reassemble it following the above instructions. 3 Before start or stop using the shotgun, make sure that: - the chamber and magazine do not contain shotshells; - the safety is on; 1 To load a single shotshell. - point the shotgun in a safe direction; - turn on the safety; - move the bolt rearward until it stops (if the hammer has been cocked, push the interceptor catch button toward the stock and only then the bolt can be moved rearward); - load a shotshell into the receiver through the ejection port keeping the interceptor unpressed; - keep your hand away from the ejection port zone and the bolt handle travel zone; - press the interceptor button (Fig. 3), then the bolt while moving forward will feed a shotshell into the chamber; - turn off the safety. - drift out the interceptor pin 72 and remove the interceptor 70 with spring 71, interceptor button 73 and interceptor button spring 74; - to remove the tubular magazine spring 15 and the follower 16, press the plastic sleeve 14 lugs accessible through the side openings in the magazine tube, move the sleeve down the magazine tube until it flushes with the magazine tube front end, turn the sleeve by an angle and remove it. While removing great care should be taken to avoid escape of the cup under the action of the magazine spring 15. TO HOLD THE INTERCEPTOR PIN FROM SHIFTING DURING SHOOTING, ITS LOWER END SHOULD BE CENTER-PUNCHED AROUND THE CONTOUR OF THE OPENING IN THE RECEIVER; - to reassemble the bolt: 1) assemble the extractors with the bolt; 2) insert the bolt lock into the bolt as shown in the figure 4, moving it down until the recess in the bolt becomes visible; 3) insert the ball 6 into the recess in the bolt lock and lift the bolt lock; 4) insert the washer 4 into the rear slot in the bolt lock; 5) insert the firing pin 3 with firing pin spring 5 into the bolt through the washer; 6) knock in the pin 37 of the firing pin; - reassemble the trigger assembly. Take care that stock-to-receiver fit is tight. [. . . ] 8 If you disassemble several shotguns at the same time, do not mix their bolt locks and bolts, as these parts are not interchangeable. 9 When choosing ammunition for your shotgun, priority should be given to plastic cased shotshells having star-type crimping. 10 When using light loads (less than 25 g) or heavy loads (more than 45 g), the adjustment of the gas system may be required if the action fails to operate correctly for ensuring trouble-free operation of the shotgun. If in firing heavy loads, a shell is not fed from the magazine into the chamber, give the gas cylinder nut two turns counterclockwise using a special wrench coming with the shotgun. [. . . ]