Figure 5 – AR-10
AR-10 rifle completely disassembled and ready for cleaning and inspection.
Figure 6 – Major Components of AR-10 type rifles
Major Components of AR-10 type rifles, refer to Figure 6
1 - Lower Receiver and Buttstock Assembly
2 - Upper Receiver and Barrel Assembly
3 - Charging Handle
4 - Bolt and Bolt Carrier Assembly
When the operator begins to disassemble the weapon, it should be done in the following order:
To begin the disassembly-
Upper and lower receivers
1.First clear the weapon as per the above description, depending on the weapon’s condition.
2.Place the weapon on a flat, clean surface with the muzzle oriented in a safe direction. You may remove the sling if you need but otherwise you can leave it on the weapon.
Figure 7 – Separating the upper and lower receivers by pressing the take down pin
3.Separate the upper and lower receivers by grasping the weapon by the buttstock and with your free hand, push the take down pin as far as it will go right, do not force it, refer to Figure 7. If needed use a plastic or wood pin punch…it should be fairly tight.
Figure 8 – Removing the pivot pin
4.Push the pivot pin as far as it will go right, do not force it, and refer to Figure 8. If needed use a plastic or wood pin punch…it should be fairly tight. Lay the separated receivers down.
Charging handle and bolt carrier assembly
Figure 9a – Removing the bolt assembly
5.Unlock and pull back the charging handle and bolt carrier assembly, refer to Figure 9a.
Figure 9b – Lift out the bolt assembly
6.Lift the bolt carrier assembly off the charging handle, refer to Figure 9b.
Figure 9c – Lift out the charging handle
7.Pull back and lift up the charging handle, ensure you position the charging handle to clear the upper receiver’s track, refer to Figure 9c.
Figure 10a – Components of the bolt carrier assembly
| 1. Firing Pin | 4. Bolt Cam Pin |
| 2. Bolt Carrier | 5. Bolt Assembly |
| 3. Firing Pin Retaining Pin |
Figure 10b – Removing the firing pin retaining pin
8.Move the bolt forward to the unlocked position and remove the firing pin retaining pin, the Glock punch tool works great. Do not open or close the split end of the firing pin retaining pin, refer to Figure 10b.
Figure 10c – Locking the bolt to the rear
9.Push in on the bolt to put it in the rearward locked position, refer to Figure 10c.
Figure 10d – Removing the firing pin
10.Catch the firing pin as it drops out of the rear of the bolt carrier assembly, refer to Figure 10d.
Figure 10e – Removing the cam pin
11.Give the bolt cam pin a ¼ turn and lift it out, refer to Figure 10e.
Figure 10f – Removing the bolt from the bolt carrier.
12. Remove the bolt by pulling it from the front of the bolt carrier, refer to Figure 10f.
Figure 10g – Components of the bolt assembly
Components of the bolt
| 1- Extractor Pin | 5- Ejector |
| 2- Extractor | 6- Ejector Spring |
| 3- Extractor Spring | 7- Gas Rings (3) |
| 4- Ejector Pin | 8- Bolt |
Figure 10h – Checking extractor spring tension
13.Check the spring tension on the extractor by pressing on rear of it, refer to Figure 10h. Extractor claw should return once released. If you are to disassemble the extractor do is in the following manner.
Figure 10i – Removing the extractor pin
14.With a punch, Glock tool, cartridge head, or appropriate tool remove the extractor pin, refer to Figure 10i.
Figure 10j – Removing the extractor
15.Remove the extractor and spring assembly, refer to Figure 10j. Do not remove the spring assembly, its insert or the O-ring from the extractor unless you are upgrading this to a black buffer, five coil spring and O Ring to enhance the extraction capability.
Lower Receiver
Figure 11a – Depressing the buffer spring retainer
16.The hammer must be in the cocked position. Cock the hammer with your thumb in needed. Push in the buffer and depress the retainer to release the buffer, refer to Figure 11a.