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Operating the Firearm

Overview

Read detailed instructions about loading, unloading, and other operation of your Pump Action Model 870 firearm.

How To Load And Unload

WARNING! Always check the shell for the correct gauge and length before loading the firearm.

I. TO LOAD ONE SHELL ONLY:

  1. Point the firearm in a safe direction.
  2. Engage the safety mechanism. RED BAND WILL NOT SHOW.
  3. Push upward on the action bar lock.
  4. Pull the fore-end fully rearward to open the action.
  5. Put one shell of the correct gauge and length through the ejection port. See Picture 8.
    02870load.png
  6. Push the fore-end forward to close the action.

WARNING! THE FIREARM IS NOW LOADED AND CAN BE FIRED.

  1. To fire the firearm, first disengage the safety mechanism. RED BAND WILL SHOW.

THE FIREARM IS READY TO FIRE.

  1. Pull the trigger to fire the firearm.
  2. Pull the fore-end fully rearward forcefully to eject the empty shell.

WARNING! Always check the shell for the correct gauge and length before loading the firearm.

II. TO LOAD THE CHAMBER AND MAGAZINE:

  1. Point the firearm in a safe direction.
  2. Engage the safety mechanism. RED BAND WILL NOT SHOW.
  3. Push upward on the action bar lock.
  4. Pull the fore-end fully rearward to open the action.
  5. Put one shell of the correct gauge and length through the ejection port. See Picture 8.
  6. Push the fore-end forward to close the action.

THE FIREARM IS NOW LOADED.

  1. Press shell against the carrier. See Picture 9.
    03870load.png
  2. Push three (3) 3-1/2" (870 Super Magnum™ only) shells or four (4) 3" or 2-3/4" shells of the correct gauge and length, one at a time, fully forward into the magazine.

WARNING! BEFORE LOADING, ALWAYS CHECK THE BARREL MARKING FOR THE CORRECT GAUGE AND CHAMBER LENGTH. NEVER USE AMMUNITION WHICH EXCEEDS THE CHAMBER LENGTH SHOWN ON THE BARREL.

WARNING! Be sure the rim of each shell snaps past the shell latch to prevent the shell from sliding back over the carrier.

If the shell slides back over the carrier:

  • Engage the safety mechanism. Make sure the RED BAND IS NOT SHOWING.
  • Keep the firearm pointed in a safe direction.
  • Forcefully OPEN the action or
  • REMOVE the trigger plate assembly following the instructions shown on the Cleaning, Lubrication, and Maintenance page and remove the shell.

THE CHAMBER AND MAGAZINE ARE NOW FULLY LOADED.

  1. To fire the firearm, first disengage the safety mechanism. RED BAND WILL SHOW.

THE FIREARM IS READY TO FIRE.

  1. Pull the trigger to fire the firearm.
  2. Pull the fore-end fully rearward forcefully to eject the empty shell.
  3. Slide the fore-end forward to chamber the next shell.
  4. Engage the safety mechanism when you are finished firing. RED BAND WILL NOT SHOW.

III. TO UNLOAD THE FIREARM:

  1. Point the firearm in a safe direction.
  2. Engage the safety mechanism. RED BAND WILL NOT SHOW.
  3. Push upward on the action bar lock.
  4. Pull the fore-end slowly rearward until the front of the shell is even with the ejection port.
  5. Lift the front of the shell outward and remove from the ejection port.
  6. Pull the fore-end fully rearward until the next shell is released from the magazine.
  7. Tip the firearm sideways to allow the shell to drop from the ejection port.
  8. Close and open the action until all shells are removed.

WARNING! Look into the ejection port. Check the chamber and magazine to make sure there are no shells in the firearm.

To Assemble The Magazine Plug

WARNING! A magazine plug which limits the magazine capacity to two (2) shells must be installed according to The Federal Migratory Bird Treaty Act and some state laws.

NOTE: There are two types of magazine spring retainers used in the Model 870™ shotgun. One has a round hole in the center, the other has a slot in the center.

TO INSTALL THE MAGAZINE PLUG ON FIREARMS HAVING MAGAZINE SPRING RETAINERS WITH A HOLE IN THE MAGAZINE SPRING RETAINER:

  1. Engage the safety mechanism. RED BAND WILL NOT SHOW.
  2. Check the chamber and the magazine to make sure there are no shells in the firearm.
  3. Unscrew and remove the magazine cap.
  4. Put a screwdriver into the open end of the magazine tube. Move the tip under the rim of the magazine spring retainer. See Picture 10.
    04870load.png
  5. Place your hand over the end of the magazine tube.
  6. Using the screw driver, pry up and remove the magazine spring retainer.

WARNING! Always wear eye protection and use extreme care when removing the magazine spring retainer, as the retainer is under tension from the magazine spring.

  1. Place the small end of the magazine plug into the magazine spring. See Picture 11.
    05870load.png
  2. Put the magazine spring retainer over the large end of the magazine plug.
  3. Push the magazine spring, magazine plug and the magazine retainer into the magazine tube.
  4. Tap the magazine spring retainer into the magazine tube, even to the end of the magazine tube.
  5. Replace and tighten the magazine cap.

TO INSTALL THE MAGAZINE PLUG ON FIREARMS HAVING MAGAZINE SPRING RETAINERS WITH A SLOT IN THE MAGAZINE SPRING RETAINER:

  1. Engage the safety mechanism. RED BAND WILL NOT SHOW.
  2. Check the chamber and the magazine to make sure there are no shells in the firearm.
  3. Unscrew and remove the magazine cap.
  4. Put a screwdriver into the slot in the magazine spring retainer. See Picture 12.
    06870load.png
  5. Place your hand over the end of the magazine tube.
  6. Push the magazine spring retainer into the magazine tube.
  7. Turn the retainer 90° and slowly release the retainer. See Picture 12.

WARNING! Always wear eye protection and use extreme care when removing the magazine spring retainer, as the retainer is under tension from the magazine spring.

  1. Place the small end of the magazine plug into the magazine spring. See Picture 13.
    07870load.png
  2. Work the magazine spring into the magazine tube.
  3. Put the open end of the magazine spring retainer over the large end of the magazine plug.
  4. Align the detent slot on the magazine spring retainer with the detents on the top and bottom of the magazine tube.
  5. Push the magazine spring, plug and retainer into the magazine tube approximately one (1) inch.
  6. Turn the retainer 90° to lock the retainer into position.
  7. Slowly release the retainer to make sure that the retainer is properly seated.
  8. Replace and tighten the magazine cap.

How To Disassemble

  1. Engage the safety mechanism. RED BAND WILL NOT SHOW.
  2. Push the action bar lock upward and pull the fore-end rearward to open the action.

WARNING! Look into the ejection port and check the chamber and magazine to make sure there are no shells in the firearm.

  1. Slide the fore-end forward approximately halfway.
  2. Unscrew and remove the magazine cap.
  3. Take hold of the barrel ahead of the magazine tube and pull the barrel from the receiver.
  4. Push the carrier upward.
  5. Reach into the bottom of the receiver. Depress and hold the left shell latch. See Picture 14.
    08870load.png
  6. Slide the fore-end forward and off of the magazine tube.

NOTE: The top right edge of the slide may bind on the bottom front edge of the ejection port in the receiver. To free the slide, push the front end of the bolt down. See Picture 15.

09870load.png

  1. Lift the breech bolt assembly and slide assembly from the rear of the action bars.

NOTE: Steps 10-12 are for the Model 870™ Super Magnum™ ONLY.

  1. Turn breech bolt assembly upside down. (Refer to NOTE after step 8.)
  2. Place a small thin-bladed screwdriver under tab of port cover and lift slightly. See Picture 16.
    10870load.png
  3. Slide port cover rearward from the breech bolt assembly.
  4. Tap out the front and rear trigger plate pins. See Picture 15.
  5. Lift the rear of the trigger plate assembly, slide rearward and remove from the receiver.

WARNING! DO NOT allow the hammer to snap forward when the trigger plated is removed. This can best be assured by keeping the safety mechanism engaged at all times. RED BAND WILL NOT SHOW.

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