Maintenance Instructions

10044S
Colt Canada Proprietary 3-2-40 2005-09-20
When clamping the lower receiver in a vise, ensure that the vise is closed over a solid
portion of the receiver body. Tighten the vise only sufficiently to provide a firm grip on the
receiver.
a. Carefully clamp the lower receiver in a vise equipped with protected jaws;
b. Unscrew the receiver extension nut, in a
counter-clockwise direction, when
viewed from the rear, with the hook
wrench (CF62420) and a 1/2 inch drive
ratchet. See Figure 3-2-53;
NOTE
Unscrewing the receiver extension nut will
release the takedown pin detent and
spring. Maintain control of the receiver end
plate to retain the detent and spring.
c. Cover the extension and receiver with a
cloth to ensure that no parts are lost
and turn the receiver end plate
clockwise sufficiently to release the
takedown pin detent spring;
d. Remove the detent spring, detent and
takedown pin. See Figure 3-2-54;
e. Unscrew the receiver extension in a
counter-clockwise direction, when
viewed from the rear; and
NOTE
Unscrewing the lower receiver extension
will release the buffer retainer and spring.
Cover the receiver, to prevent loss of these
parts, as the extension is disassembled.
f. Remove the extension, buffer retainer
and buffer retainer spring from the
lower receiver.
Figure 3-2-53 Unscrewing the Receiver
Extension Nut
Figure 3-2-54 Removing the Takedown Pin,
Detent and Spring