Operators Safety & Instruction Manual

Function of the Diemaco MRR [cont]

As the cartridge seats in the chamber, the extractor snaps over the rim of the cartridge case. Forward

motion of the bolt stops, and the bolt locks into the barrel extension, under influence of the carrier cam, as

the carrier rides forward over the bolt.

When the trigger is released, the disconnect is rotated back to the point of releasing the hammer while the

trigger sear surface rotates in front of the hammer notch. As the hammer is released by the disconnect, it

catches on the trigger sear surface, ready for the next firing cycle.

THIS IS A SEMI-AUTOMATIC FIREARM. IT IS IMMEDIATELY LOADED AND READY TO

FIRE AFTER EACH SHOT UNTIL THE MAGAZINE IS EMPTY.

FUNCTION TEST

With the magazine removed, and the firearm proved safe, test the

function of the firearm after assembly as follows:

• Cock the firearm; set the fire control selector to [S]; and squeeze

the trigger: The hammer SHOULD NOT be released.

• Set the fire control selector to [R]; squeeze the trigger and hold

it to the rear: The hammer SHOULD be released.

• With the trigger still at the rear, cock the firearm: the hammer

SHOULD NOT be released.

• Release the trigger and listen for a “Click” as the disconnect releases the sear.

• Squeeze the trigger again: The hammer SHOULD be released.

CAUTION

17274S-EN

Figure 3