Colt Ar Rifle
1. Depress the magazine catch button (55) and withdraw the magazine box (1). Depress the handle latch (80) and retract the charging handle (77). Examine chamber to make sure it is clear of a cartridge. Release the charging handle.
2. With the tip of a cartridge push the takedown pin (56) located above the safety lever through the receiver from left to right. The barrel unit may now be "broken open" from the stock In the same way that a double-barrel shotgun is broken open.
3. The buffer body (31) and all its attendant parts are easily withdrawn by pressing down the buffer retainer (26). The buffer assembly Is, of course, under some tension, and care should be exercised In its removal. It is not recommended that the trigger or hammer parts be removed, but their placement is evident with the action open.
4. Withdraw the bolt carrier (67) from the upper receiver (91). This will require the retraction of the charging handle which, after the bolt carrier's removal, can be taken out completely, if required.
5. The bolt itself (69) containing extractor, ejector, firing pin and associated parts, is removed from the carrier by first pushing out the firing pin retainer (63) and pulling the exposed firing pin (62) to the rear and out.
6. Push the bolt to the rear and turn the bolt cam pin (64) until it is free of the bolt carrier key (66) and can be lifted out; with this accomplished, the bolt may be withdrawn and the extractor and ejector retaining pins exposed. Their removal is not recommended, nor is the removal of the three bolt rings (68). These bolt rings should have their openings staggered for best operation of the rifle.
Handguard removal is accomplished simply by pulling back on the handguard slip ring (120) and separating the two handguard halves (97 & 105). Field stripping is now complete, and reassembly is accomplished by reversing the procedure.
65. Carrier screws (2) 68. Bolt carrier key
67. Boit carrier
69. Bolt
70. Extractor
71. Extractor pin
72. Ejector pin
73. Ejector spring
74. Ejector
75. Extractor spring
77. Charging handle
78. Handle latch pin
88. Port cover spring
89. Port cover rod
90. Rod retaining ring
91. Upper receiver
92. Port cover detent
93. Detent spring
94. Detent spring retainer
95. Detent retainer
96. Port cover
98. Handguard liner (r.)
99. Liner rivet (10)
100. Barrel
101. Barrel extension
102 Barrel index pin
103. Liner rivet (10)
104. Handguard liner (I.)
106. Front sight post
107. Front sight detent
108. Front sight spring
109. Gas tube pin
110. Front sight housing
111. Sight taper pins (2)
112. Front swivel rivet
113. Front swivel
114. Gas tube plug
115. Gas tube
116. Handguard cap
117. Flash suppressor
118. Lock washer
119. Barrel nut
120. Handguard slip ring
121. Slip ring spring assy.
122. Handguard snap ring
Parts Legend
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