FSC Firearm Cleaning and Maintenance 2 — Questions and Answers
Question 1: Over-lubricating a firearm with too much oil can cause which problem?
- Attract dirt and debris, potentially causing malfunctions (Correct answer)
- Make the firearm fire too quickly
- Cause the barrel to overheat
- Crack wooden grip panels
Correct answer: Attract dirt and debris, potentially causing malfunctions
Excess oil acts like a magnet for grit and carbon, which can accumulate in critical areas and lead to feeding or cycling failures.
Question 2: Why is it important to wear eye protection when cleaning a firearm?
- Solvents and debris can splash or flake off and injure eyes (Correct answer)
- To prevent glare from the firearm's finish
- Eye protection is not necessary during cleaning
- To keep solvent fumes away from the face
Correct answer: Solvents and debris can splash or flake off and injure eyes
Chemical solvents can splash, and bore brushing can dislodge metal fragments or fouling particles that could injure unprotected eyes.
Question 3: What should you do if you discover a bulge or crack in a firearm's barrel during cleaning?
- Stop using the firearm and have it inspected by a qualified gunsmith (Correct answer)
- Fill the crack with gun oil and continue use
- Sand down the bulge and refinish the barrel
- Fire a few rounds to test if it fires normally
Correct answer: Stop using the firearm and have it inspected by a qualified gunsmith
A bulged or cracked barrel is a serious structural defect that can cause the firearm to catastrophically fail when fired, and only a gunsmith can safely evaluate it.
Question 4: When using a cleaning rod, in which direction should you push the patch through the barrel for best results?
- From the chamber (breech) end toward the muzzle (Correct answer)
- From the muzzle toward the chamber
- Back and forth rapidly to scrub both directions
- Direction does not matter for cleaning effectiveness
Correct answer: From the chamber (breech) end toward the muzzle
Pushing from the chamber toward the muzzle follows the direction of the bullet, pushes fouling out the muzzle end, and avoids bending the cleaning rod against the crown.
Question 5: Which parts of a semi-automatic pistol typically require lubrication during routine cleaning?
- The slide rails, barrel exterior, and trigger group contact points (Correct answer)
- Only the barrel interior
- The magazine spring and follower
- The grip panels and front sight
Correct answer: The slide rails, barrel exterior, and trigger group contact points
Slide rails, the barrel's exterior locking surfaces, and the trigger group are the primary friction points that require light lubrication for reliable cycling.
Question 6: What is the safest way to dispose of solvent-soaked cleaning patches after use?
- Place them in a metal container with a lid or allow them to air dry before disposing (Correct answer)
- Throw them directly in an indoor wastebasket near your work area
- Burn them immediately in an open flame
- Flush them down a toilet
Correct answer: Place them in a metal container with a lid or allow them to air dry before disposing
Solvent-soaked patches can be flammable or emit fumes; a sealed metal container or air-drying in a safe outdoor location prevents fire hazards.
Question 7: How can you visually inspect a bore to confirm it is clean after cleaning?
- Hold the unloaded firearm up to a light source and look through the barrel from the breech end (Correct answer)
- Fire one round to check for consistent velocity
- Use a magnet to detect metal fragments
- Pour water through the barrel and check the runoff color
Correct answer: Hold the unloaded firearm up to a light source and look through the barrel from the breech end
Looking through the bore of an unloaded firearm at a light source allows you to see the rifling and detect any remaining fouling or obstructions.
FSC Firearm Cleaning and Maintenance 2
Over-lubricating a firearm with too much oil can cause which problem?