Block 6 Examination of Long Guns
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31 Terms
What are three advantages of the bolt action operating system?
Simplicity
Reliability
Mechanical strength
What is the main disadvantage of the bolt action operating system?
Longer cycling time
What are two advantages of direct impingement gas operation?
Faster cycling
Cheaper to manufacture
What is the main disadvantage of direct impingement gas operation?
Increased fouling
What are two advantages of gas piston operation?
Cleaner
More reliable
What are two disadvantages of gas piston operation?
Heavier
More expensive
What type of firearm utilizes gas piston operation?
AK platform
What are three advantages of lever action operation?
Ease of operation
Reliable
Accurate at close range
What is the main disadvantage of lever action operation?
Limited ammunition range due to tubular magazine
What are two advantages of rolling block operation?
Fewer moving parts
Easier to clean
What is the main disadvantage of rolling block operation?
Parts can flex and loosen when operated with more modern cartridges
What are three advantages of falling block operation?
Use with high powered cartridges
Accurate
Durable
What is the main disadvantage of falling block operation?
Slower rate of fire (single shot)
What are two disadvantages of trap door operation?
Slower rate of fire (single shot)
Frequent extraction issues
What is the main disadvantage of Martini operation?
Slower rate of fire (single shot)
What are three advantages of pump operation?
Reliable
Ease of use for beginners
Wide ammo range
What is the main disadvantage of pump operation?
Slower rate of fire
What are two advantages of break action operation?
Simplicity
Well suited for high powered cartridges
What are two disadvantages of break action operation?
Slower rate of fire
Limited capacity
What are two advantages of box lock operation?
Reliable
Durable
What is the main disadvantage of box lock operation?
Harder to strip/clean
In back action variants of side lock actions, where is the spring located?
Behind the hammer
In bar action variants of side lock actions, where is the spring located?
Forward of the hammer
What are two disadvantages of side lock operation?
Higher cost
Complex assembly
What is the most unique component of the M1 Garand?
En bloc magazine
What is unique about the M14 rifle?
First military select fire rifle
What components does an SKS variant have as opposed to an AK variant?
Tilting bolt
Hinged magazine
One piece wooden stock
Bayonet attachment
What are the three parts of a “super safety” designed for an AK variant rifle?
Trip bar
AK Sear
Retainer plate (optional)
What company created microgroove rifling?
Marlin
What are four advantages of microgroove rifling?
Better accuracy
Easier cleaning
Sped up production time
Extends tool life
What are the two types of single triggers found on double barrel shotguns?
Selective
Non-selective