Thompson Submachine Guns

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Question 1 of 7

1. Question
A Thompson submachine gun’s rocker (selector) should only be moved when the bolt is cocked and locked to the rear.
- True
- False
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Question 2 of 7

2. Question
There is a tab/protrusion that is found in the upper part of the magazine raceway/track that interacts with a tab on the magazine. What do these parts of a Thompson submachine gun do?
- These parts were added to the design to insure that the magazine stayed in working position in case the magazine catch failed during full auto operation.
- These parts release the magazine catch and allow the magazine to slide out of the gun.
- These are the parts that make the bolt hold open feature work.
- This in the inner workings of the loaded cartridge indicator.
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Question 3 of 7

3. Question
What does the safety block on a Thompson submachine gun?
- The trigger
- The sear
- The bolt
- The frame latch
- The hammer
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Question 4 of 7

4. Question
When the Thompson submachine gun is switched from firing in full auto to semi-auto, what happens to the rocker?
- The rocker moves upward in the trigger pack.
- The rocker moves downward in the trigger pack.
- The section of the inside of the trigger pack does not move, however the section on the right side of the trigger pack rotates to point in the forward direction.
- The section of the inside of the trigger pack does not move, however the section on the right side of the trigger pack rotates to point in the rearward direction.
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Question 5 of 7

5. Question
Which one of the statements below best describes the cycle of operation of the Thompson submachine gun when it is set to fire in semi-auto mode?
- When the trigger is pulled, the back of the sear rotates downward and releases its engagement with the bolt and the bolt moves forward. The bolt directly hits the disconnector and pushes it forward and down out of engagement with the sear. The rear end of the sear will stay down. The bolt continues forward and discharges the cartridge, which sends the bolt rearward, passing over the sear until the bolt is caught by the top of the rocker. When the trigger is released, the disconnector will pop back under the lifter. The gun is now ready for the next shot.
- When the trigger is pulled, the front of the sear rotates downward and releases its engagement with the bolt and the bolt moves forward, hits the rocker causing it to move higher in the trigger pack, which will in turn cam the disconnector forward and out of engagement with the sear. The rear end of the sear will then pop back up. The bolt continues forward and discharges the cartridge, which sends the bolt rearward, passing over the sear and pushing it down. The sear will then pop back up to catch the bolt, as it returns forward. When the trigger is released, the disconnector will pop back under the lifter. The gun is now ready for the next shot.
- When the trigger is pulled, the front of the sear rotates downward and releases its engagement with the bolt and the bolt moves forward, hits the rocker and pushes it forward and down, which will in turn push the disconnector rearward, causing the front of the sear to rotate upward. The bolt continues forward and discharges the cartridge, which sends the bolt rearward until it hits the rocker, which will temporarily pivot the sear downward, allowing the bolt to move all of the way rearward, tripping the disconnector and the sear will move up even farther to catch the bolt, as it returns forward. When the trigger is released, the disconnector will pop back under the lifter. The gun is now ready for the next shot.
- When the trigger is pulled, the back of the sear rotates downward and releases its engagement with the bolt and the bolt moves forward, hits the rocker and pushes it forward and down, which will in turn push the disconnector forward and out of engagement with the sear. The rear end of the sear will then pop back up. The bolt continues forward and discharges the cartridge, which sends the bolt rearward, passing over the sear and pushing it down. The sear will then pop back up to catch the bolt as it returns forward. When the trigger is released, the disconnector will pop back under the lifter. The gun is now ready for the next shot.
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Question 6 of 7

6. Question
How many springs are used for the buffer/recoil system in a semi-auto version of the Thompson
- 1
- 2
- 3
- 4
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Question 7 of 7

7. Question
What limits and retains the firing pin inside of the bolt of a semi-auto version of the Thompson?
- A large plug.
- Three roll pins.
- Two pins.
- One screw.
- Nothing limits or retains the firing pin.
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