NRA NRA Cleaning & Maintenance 2

Question 1

What is the purpose of using a bore guide when cleaning a bolt-action rifle?

Accepted Answer

To center the cleaning rod and prevent solvent from entering the action and stock inlet

Answer

To measure bore diameter

Answer

To hold the bore brush during storage

Answer

To align the scope with the bore

Question 2

What is the best way to remove lead fouling from a revolver bore?

Accepted Answer

Use a lead removal cloth or a Lewis Lead Remover

Answer

Use a copper brush with copper solvent

Answer

Use hot water and dish soap

Answer

Use a brass brush aggressively without solvent

Question 3

What is the function of CLP (Cleaner, Lubricant, Protectant)?

Accepted Answer

It serves as a combined cleaner, lubricant, and corrosion protectant in one product

Answer

It is used only as a rust preventive coating

Answer

It removes copper fouling exclusively

Answer

It is a solvent for plastic and polymer parts

Question 4

How should a gunsmith properly store a cleaned firearm to prevent rust?

Accepted Answer

Apply a light coat of oil to metal surfaces and store in a low-humidity environment

Answer

Wrap tightly in plastic with no air exposure

Answer

Store in a sealed airtight case without oil

Answer

Apply heavy grease to all exterior surfaces

Question 5

What causes copper fouling in a rifle bore and how is it treated?

Accepted Answer

Copper from bullet jackets deposits in the bore grooves; treated with an ammonia-based copper solvent

Answer

Unburned powder sticks to the bore; treated with carbon solvent

Answer

Water vapor condenses and oxidizes; treated with rust remover

Answer

Lead from cast bullets plates the bore; treated with lead solvent

Question 6

What is the recommended way to clean a suppressor (if the design permits)?

Accepted Answer

Soak in an ultrasonic cleaner with appropriate solvent or wet tumble in appropriate media

Answer

Soak in water for 24 hours

Answer

Use a high-pressure air hose to blow out debris

Answer

Clean with bore brushes through each baffle