GAU-18/A CYCLE OF OPERATION Flashcards
1
Q
List The Cycle of Operation steps
A
- Firing the First round
- Recoiling
- Extracting the Round
- Cocking
- Counter- Recoil
- Feeding
- Ejecting
- Chambering the Round
- Automatic Firing of Subsequent Rounds
2
Q
Firing the First Round
A
- must be loaded and manually cocked by the charging the bolt to the rear.
3
Q
Recoil
A
- bolt is locked to the barrel extension by the breech lock moving 3/4 inch as one unit
- The Barrel Extension recoils 1 1/8 inches
- The Bolt Recoils 7 1/8 inches
4
Q
Extracting the Round
A
- as the bolt moves rear ward the extractor pulls a new round out of the belt link moving the round into the T-Slot
5
Q
Cocking
A
- happens immediately after firing
- when the recoiling parts are 1/16 inch from the full battery position the gun is ready to fire
6
Q
Counter- recoil
A
- after recoil the bolt is forced forward by the energy stored in the drive spring, buffer tube discs, and recoil buffer assembly
- forcing the Bolt, Barrel, and Barrel extension back into battery.
7
Q
Feeding
A
- process of Extracting a live round, positioning, and chambering the live round
8
Q
Ejecting
A
- process of ejecting the spent round out of the T-Slot by the Ejector
9
Q
Chambering the round
A
- chambering the round by the extractor placing the round in the T-Slot and the bolt moving forward placing the round in the Chamber
10
Q
Automatic Firing Subsequence Rounds
A
- as long as the trigger is depressed.
- the trigger holds the Trigger Cam up in the rear and the front down depressing the SEAR releasing the fire pin extension when in battery
11
Q
During automatic firing of subsequent rounds the action is timeso that ther ecoil starts just before the recoiling parts a reached the fully forward battery positio. What does this prevent the barrel extension from striking
A
- The Trunnion Block
