Manual

Disassembly of the Mainspring Housing with ILS

Do not attempt this procedure unless you have

considerable experience in firearms disassembly.

1. Place mainspring housing in a vice.

2. With a suitable punch, depress the ILS spring

cap and hold it down. (Figure 15-1)

3. While continuing to depress the ILS spring cap,

remove the takedown pin. (Fig. 15-2)

4. Slowly and carefully release the pressure on

the spring cap allowing it to move out of the

mainspring housing. (Fig. 15-3)

5. After the spring cap has been removed, the main-

spring and mainspring retainer can be removed.

Caution: Do not turn the locking pin when the ILS is

disassembled. The system may be reassembled only

with the ILS pin deactivated (with the holes vertical or

stacked).

This procedure requires extreme caution. The ILS

spring cap is under extreme pressure and will be

ejected if you fail to perform the disassembly

properly. Use extreme care and wear eye protection.

SPRINGFIELD’S INTEGRAL LOCKING SYSTEM (ILS)

➤

Fig. 15-1 Fig. 15-2 Fig. 15-3

Reassembly of the Mainspring Housing with ILS

1. Assemble the mainspring cap, mainspring, and

mainspring retainer then insert into the

mainspring housing. (See Figure 16)

2. Carefully depress the cap far enough to allow

you to reinstall the takedown pin. (See Fig.16-1).

3. Carefully and slowly release the pressure on the

spring cap until the takedown pin captures it.

SPRINGFIELD’S INTEGRAL LOCKING SYSTEM (ILS)

Figure 16-1

Figure 16