The Gun Digest Book of Firearms Assembly/Disassembly Part IV - Centerfire Rifles. J B Wood
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Название: The Gun Digest Book of Firearms Assembly/Disassembly Part IV - Centerfire Rifles
Автор: J B Wood
Издательство: Ingram
Жанр: Спорт, фитнес
isbn: 9781440224195
isbn:
7. The firing pin and its return spring are retained in the bolt by a cross pin that has a split-end lock tip on the left side of the bolt. Make a tool with a V-end, such as the one shown (arrow), to compress the lock tip and push the pin out toward the right. The firing pin and its spring are then taken out rearward.
8. There is an access slot at the rear edge of the extractor. Insert a small tool, and lift the front of the extractor spring until it clears the shoulder on the extractor. Use a small drift in the notch at the rear of the spring to push it forward for removal.
9. Tip the extractor forward and remove it from its recess in the bolt.
10. If the front sight is to be removed, turning the adjustment screw counter-clockwise will move it out of its dovetail. If removal of the entire unit is too be done, it is necessary to use a tool to unscrew the nut at the muzzle.
11. Remove the screw on the underside at the front of the forward barrel band.
12. Slide the front barrel band forward off the stock.
13. Insert a tool to lift the middle band latch until its inner lug clears, and slide the band off toward the front.
14. Lift the upper handguard at the front, and take it off toward the front.
15. Remove the three screws on the underside, at the front of the magazine plate, just behind the catch and at the rear of the trigger guard. If the gun has not been previously disassembled, these screws may be heavily staked in place, and removal may be difficult.
16. Remove the trigger guard and magazine housing unit downward.
17. Remove the action from the stock.
18. The retainer for the rear sight is secured by two screws on the underside. After removal of the screws, the retainer clips can be moved to the center, and the sight base can be taken off, along with the rear collar for the upper stock handguard.
19. If the gas tube is to be removed, the lock nut at the front must first be loosened. The tube has two wrench flats for removal. Avoid any extreme pressure that might deform the tube.
20. A special wrench is required for the gas adjustment valve, and any attempt to take it off without the tool may damage it. In normal takedown, it is best left in place. If removal of the entire unit is necessary, it is retained by a riveted cross pin. After removal of the pin, the unit is driven off toward the front. Again, it is best left in place.
21. The bolt hold-open device is retained in the underside of the receiver by a cross pin that is heavily staked in place. After removal of the pin, the latch and its spring are taken out downward.
22. Drifting out the hold-open latch cross pin will also release the disconnector and its spring for removal.
23. The safety arm and its spring are retained by a large screw inside the receiver, and a nut on the outside. These components are staked in place, and should be removed only for repair.
24. This heavily-staked screw on the left side of the receiver retains the ejector. After the screw is removed, the ejector stabilizer pin, just forward of the screw, must be drifted out to free the ejector. The pin must be pushed out toward the left from inside the hold-open recess.
25. Restrain the hammer, pull the trigger, and ease the hammer down to its forward-most position.
26. Remove the hammer and its follower.
27. Drifting out this cross pin will allow removal of the hammer. Drifting out the smaller pin, just forward of this one, will release the magazine catch and its spring for removal.
28. The sear and its spring are retained by this cross pin. Like the others in the firing system, this pin is heavily riveted, so removal should be only for repair purposes.
29. After the sear is removed, drifting out this cross pin will release the trigger and its spring and plunger for removal. Control the spring and plunger as the trigger is taken out. The trigger bar is retained on the trigger by a riveted cross pin.
30. To remove the safety-lever from the receiver end piece, first take out this screw, in the front face of the unit on the right side.
31. After the screw is out, insert a small tool to nudge the retainer outward for removal.