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How to disassemble Remington 870?

How to Disassemble a Remington 870 Shotguns: A Step-by-Step Guide

The Remington 870 shotgun is a legendary firearm renowned for its reliability, accuracy, and durability. Owned by millions of hunters and sport shooters worldwide, its popularity stems from its simplistic design, ease of operation, and versatility. Yet, when it comes to maintenance and repair, most users are left wondering about the process of disassembling this iconic shotgun. Worry no more! This article will walk you through the step-by-step guide on how to disassemble a Remington 870 shotgun.

Before We Begin

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Before diving into the disassembly process, it’s essential to prepare yourself and your shotgun accordingly:

  • Safety : Always ensure the gun is unloaded and the hammer is down. Never underestimate the importance of safety protocols when working with firearms!
  • Proper Use of Tools : Be prepared to use the Remington 870 Reassembly Tool (Catalog Number: 27465) or equivalent. Some users may find it optional, but trust us – it makes the process far more manageable.
  • Clean Workspace : Before starting, ensure your working area is clean, and the shotgun is free of debris, dust, and dirt.

Step-by-Step Disassembly Instructions

1. Remove the Stock

Remington 870 shotguns come with two types of stocks: the traditional 12-gauge and 20-gauge, with a fixed wooden stock (Type-A), and more modern designs with a forearm and pistol grip (Type-B). For either type, you’ll start by removing the stock pins. Locate the pins nearest the receiver (the dark-colored part) and grip them firmly. You may need to use pliers** to obtain a better grip. When you’re ready, lever the pins out, leaving the stock free to pivot.

2. Remove the Trigger Group Assembly

This is the most crucial step, as it allows you access to the rest of the shotgun’s components. Press the trigger to release its internal mechanism. Next:

  • Lift out the Trigger Housing by grasping the lever and pulling it away from the receiver. Be sure to support the trigger weight (the small metal pivot pin) as you raise the housing.
  • Remove the Trigger Spring, located inside the trigger group. This spring, once removed, can be lubricated and reinstalled properly.

3. Remove the Bolt Assembly and Ejector

Moving on to the bolt group:

  • Pull down on the Bolt Handle, located on the top-front of the receiver, ensuring the bolt is fully in the rearward position ( Fully Back – this is essential for avoiding any accidental discharge).
  • Rotate the Bolt Unlocking Lever (around the bolt axis) slightly counterclockwise. *This step allows the locking lugs to disengage from the receiver.
  • Lift the bolt assembly upward, simultaneously rotating it clockwise. Stop when the bolt is just clear of the receiver opening.
  • Remove the Ejector pinned to the receiver’s breach face. You may have to wiggle it ever so slightly to disengage it from the receiver

4. Disconnect the Forearm and Gun Barrels

Your shotgun’s Forearm or Pistol Grip, depending on the model, is another crucial component to remove during disassembly:

  • For Type-A wood stocks, grasp the exposed end of the forearm pin and lever it upwards. This lever should provide enough wiggle room to remove it.
  • For Type-B forearm and grip designs, you’ll want to press the Pin Release button (positioned on the receiver rail) to disengage it from the forearm. Take note that this Pin Release is typically located approximately 1.5 to 2 inches from the receiver’s end.

As you remove the forearm/grip, take care not to damage the fragile wood or polymer components nearby.

5. Remove the Barrels: A Note on Barrel Shims

The Remington 870 shotgun fires either 12-gauge or 20-gauge shells. When disassembling, you can remove the barrels along with the Forearm & Gun Barrels step. To do so:

  • Lever the Barrel Pins (2 on each end) outwards, one at a time. Gently lift the barrels when both pins are removed
  • Barrel shims are small spacer pieces, typically made from plastic or metal, whose purpose is to maintain internal clearance between the barrels during assembly. Don’t leave them behind, as failing to reinstall these shims can cause accuracy issues with your shotgun

The Final Steps

For Reassembly, follow your disassembly steps in the reverse order, ensuring correct alignment and reinstallation. Take note: When reassembling Type-A wood stock models, make sure not to overtighten screws, as this can further damage the stock.

Final Tips:

  • Refer to your Remington Owners Manual for specific documentation on disassembly and assembly procedures, as well as any unique requirements for specific models.
  • Work in a well-lit area, ensuring you examine each component before reinserting it into the gun.
  • Clean thoroughly after disassembly – a clean shotgun is key to optimal performance and proper function.

By following the steps outlined in this comprehensive guide, you’ll easily disassemble your Remington 870 shotgun, clearing the way for routine cleaning, maintenance, and modifications. Remember to always be mindful of safety protocols throughout the process.

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