870_rem_ipb

ILLUSTRATED PARTS BREAKDOWN (IPB)

SHOTGUN, REMINGTON 12-GAUGE 870

May 2010

THIS PAGE INTENTIONALLY LEFT BLANK

Illustrated Parts BreakdownShotgun, 12-Gauge Remington 870

CHANGE RECORDChange No. Date Title or Brief Description Signature of Validating

Officer

1-A


LIST OF EFFECTIVE PAGESNOTE: Zero in Change No. column indicates original page or work package.

Date of issue for this manual’s current version is:

Original March 2008

TOTAL NUMBER OF PAGES IN THIS PUBLICATION IS 24, CONSISTING OF THE FOLLOWING:

Page No. Change No.

Front Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0

Change Page A-B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0

Table of Contents i-ii . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0

List of Figures iii-iv . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0

List of Tables v-vi . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0

Chp 1 1-4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0

Chp 2 1-8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0

Chp 3 1-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0

1-B

TABLE OF CONTENTS

SECTION PAGE

CHANGE RECORD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A

LIST OF EFFECTIVE PAGES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B

Table of contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . i

LIST OF FIGURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii

LIST OF TABLES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v

CHAPTER 1 HOW TO USE THIS IPB WITH NOMENCLATURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

SECTION I. GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1SECTION II. IPB COMPONENTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1SECTION III. INTERPRETATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

CHAPTER 2 SHOTGUN, 12-GAUGE REMINGTON 870 PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

CHAPTER 3 ANCILLARY EQUIPMENT, TOOLS AND GAUGES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

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LIST OF FIGURES

FIGURE PAGE

FIGURE 2-1. MAJOR COMPONENTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

FIGURE 2-2. RECEIVER ASSEMBLY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

FIGURE 2-3. BUTTSTOCK ASSEMBLY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

FIGURE 2-4. BOLT ASSEMBLY AND SLIDE ASSEMBLY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

FIGURE 2-5. TRIGGER PLATE ASSEMBLY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

FIGURE 2-6. FORE-END ASSEMBLY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

FIGURE 3-1. FORE-END WRENCH. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

FIGURE 3-2. FIELD REJECT GAUGE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

iii/iv blank

LIST OF TABLES

TABLE PAGE

TABLE 1-1. EXAMPLE OF DRAWING TABLE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

TABLE 2-1. MAJOR COMPONENTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

TABLE 2-2. RECEIVER ASSEMBLY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

TABLE 2-3. BUTTSTOCK ASSEMBLY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

TABLE 2-4. BOLT ASSEMBLY AND SLIDE ASSEMBLY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

TABLE 2-5. TRIGGER PLATE ASSEMBLY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

TABLE 2-6. FORE-END ASSEMBLY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

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CHAPTER 1HOW TO USE THIS IPB WITH NOMENCLATURE

Section I. General

The following instruction explains the use of the Illustrated Parts Breakdown (IPB). An IPB defines, by color coding, which parts are authorized for repair and replacement and who is authorized to conduct repair and replacement. It is imperative that this direction be followed as outlined; failure to comply with this instruction can result in catastrophic weapons failure which in turn could result in injury or loss of life.

Section II. IPB Components.

IPB consists of the following:

(1) Color-coded line drawings.(2) Drawing table.

Table 1-1. Example of Drawing Table.

The drawing table consists of four columns. Each column provides information on parts identified by color-coded line drawing.

(1) ITEM NO. This indicates number used to identify items called out in illustration.(2) PART NUMBER. This is the manufacturer’s part number for the item identified in the drawing.(3) NSN. This is the NATO Stock Number assigned by the NATO Codification System to catalog the

item. If a NSN is assigned, this part can be ordered through the standard supply system. If only a part number is identified the part can be ordered through the supply system if it has been cataloged. If it is not identifiable by using the supply system if it has been cataloged. If it is not identifiable by using the supply system it must be ordered through open purchase from the weapons manufacturer.

(4) NOMENCLATURE. This is the standard terminology assigned to a part.

Item Number

Part Number NSN Nomenclature

6535477 1005-00-653-5477 Assy, Back Plate (flex)

1 5009275 5315-00-500-9275 Pin, straight headless

2 6008918 1005-00-600-8918 Trigger

3 5504071 5340-00-550-4071 Release, bolt latch

4 5009352 5360-00-500-9352 Spring, helical, compression

5 MS24665-814 5315-00-013-7137 Pin, cotter

6 5013581 5315-00-501-3581 Pin, straight head

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Colors Defined:

(1) Red – Components and accessories defined by color RED are to be repaired or replaced at Depot Level Maintenance only. Organizational Level (O-Level) maintenance personnel are not authorized to repair, replace, alter, or modify parts, assemblies, subassemblies, or components defined by RED. This does not prohibit inspection of RED parts by O-Level maintenance personnel.

(2) Yellow – Components and accessories defined by color YELLOW can be repaired or replaced at O-Level maintenance. However, these parts or accessories are not supported by NSWC Crane and must be procured through authorized commercial sources or internal supply system.

(3) Green – Components and accessories defined by color GREEN can be repaired or replaced at O-Level or Depot Level maintenance and are supported by use of three different systems.

Support Defined:

(1) Navy Supply – Weapon parts with NSN can be ordered through standard Navy Supply System.(2) SOF Weapons/Special Operation Particular Modifications (SOPMOD) – These items are supported

by Program Managers at NSWC Crane.(3) Open Purchase – These parts are items for Naval Special Warfare unique weapon parts that have

not had NSNs assigned. These parts require Commands to Open Purchase parts from commercial sources (normally original weapon manufacturer).

Section III. Interpretation

(1) All assemblies, subassemblies, components, and parts are to be inspected and maintained IAW Operator’s Manuals and Technical Repair Standards Manuals. IPB Color Coding simply defines who is authorized to repair or replace particular components of a weapon. Manuals containing color drawings of components reinforce IPB instructions for authorized maintenance. DO NOT confuse photographs with drawings. Photographs used in manuals are for illustration only and do not reflect authorized levels of maintenance.

(2) In an instance where a Green Part is interfaced with a Red Part, O-Level maintenance is authorized to replace or repair the Green Part as long as the Red Part is not altered or modified. An example of this is outlined below:

Color Level of Maintenance Support

RED Depot Commercial or NSWC Crane

YELLOW Depot or O-Level Commercial

GREEN O-Level or Depot Special Operation Force (SOF) Weapons ProgramNavy SupplyOpen Purchase

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(3) Lower receiver (Red Part) cannot be repaired or replaced by O-Level Maintenance. Takedown pin and pivot pin (Green Parts) can be repaired or replaced by O-Level Maintenance as long as Red Part is not modified or altered (i.e. enlarge hole by filing or tapping) to accommodate Green Part.

If you have questions or concerns with regards to the IPB, contact the Program Office at DSN 482-1871 or COMM (812) 854-1871 or email [email protected].

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CHAPTER 2SHOTGUN, 12-GAUGE REMINGTON 870 PARTS LIST

Figure 2-1. Major Components.

Item Number


0 4870 1005-00-999-4213 Shotgun, Remington 12-Gauge 870

1 4567 1005-01-328-2207 Barrel Assembly

2 N/A N/A Receiver Assembly

3 91599 1005-01-354-9976 Buttstock Assembly

4 30545 1005-00-820-7850 Trigger Plate Assembly

5 30530 1005-01-051-1703 Bolt Assembly

6 N/A N/A Fore-end Assembly

Table 2-1. Major Components.

2-1


Figure 2-2. Receiver Assembly.

Item Number


0 N/A N/A Receiver Assembly

1 18551 5307-00-437-4763 Cartridge Receiver Stud

2 30540 1005-00-437-4760 Cartridge Receiver

3 92803 1005-01-051-1721 Magazine Follower

4 92447 5360-01-049-1934 Magazine Spring

5 16949 1005-01-051-1722 Magazine Retainer Spring

6 102971 1005-01-353-9765 Cap Assembly with Swivel

7 20601 5315-00-457-3260 Front Trigger Plate Pin

8 20606 5315-00-457-3269 Rear Trigger Plate Pin

Table 2-2. Receiver Assembly.

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Figure 2-3. Buttstock Assembly.

Item Number


0 91599 1005-01-354-9976 Buttstock Assembly

1 18571 5306-00-463-5876 Gun Stock Bolt

2 18572 5310-00-613-8055 Lock Washer

3 18573 5310-00-557-9645 Flat Washer

4 25410 5305-00-999-8814 Shoulder Buttplate Screw

5 14705 N/A Recoil Pad

6 91599 1005-01-354-9976 Shoulder Gun Stock

7 14567 1005-00-437-4759 Small Sling Swivel

Table 2-3. Buttstock Assembly.

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Figure 2-4. Bolt Assembly and Slide Assembly.

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Item Number


0 30530 1005-01-051-1703 Breech Bolt Assembly

1 17436 1005-00-820-8212 Firing Pin

2 17437 5360-00-820-7796 Retractor Spring

3 18623 1385-00-902-2008 Firing Pin Retaining Pin

4 22325 1005-00-437-4748 Locking Block Assembly

5 17433 5360-00-820-8227 Extractor Spring

6 17432 1005-00-887-9292 Extractor Plunger

7 16176 1005-00-887-5973 Cartridge Extractor

8 14564 1005-00-437-4732 Breech Bolt

9 92949 1005-00-477-5022 Slide Assembly

Table 2-4. Bolt Assembly and Slide Assembly.

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Figure 2-5. Trigger Plate Assembly.

Item Number


0 30545 30545 1005-00-820-7850

1 17539 5360-00-457-3227 Spring, Detent, Trigger (Front)

2 17540 5360-01-049-1933 Spring, Detent, Trigger (Rear)

Table 2-5. Trigger Plate Assembly.

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Figure 2-6. Fore-end Assembly.

Item Number


0 N/A N/A Fore-end Assembly

1 102320 1005-00-820-8202 Fore-end Tube Assembly

2 14563 1005-00-450-2732 Wood Fore-end

3 18634 1005-00-820-8205 Fore-end Tube Nut

Table 2-6. Fore-end Assembly.


CHAPTER 3ANCILLARY EQUIPMENT, TOOLS AND GAUGES

Figure 3-1. Fore-end Wrench.

Figure 3-2. Field Reject Gauge.

NOTEFore-end wrench is open purchase item and must be percured via commercial vendor.

Item Number


1 590-016-008 N/A Fore-end Wrench

2 SMA-AK-7992 N/A Field Reject Gauge

3 NLAC AA55 N/A 12-gauge Shotgun, Dummy Rounds MK 242

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870_rem_ipb

Documents

example of drawing table

bolt assembly

slide assembly

receiver assembly

buttstock assembly

gauge remington

change page

parts list