NRA Cleaning & Maintenance Flashcards

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

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

A bore guide centers the cleaning rod in the bore and prevents solvent from dripping into the action or stock, protecting both the bore and internal components.

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

Answer: Use a lead removal cloth or a Lewis Lead Remover

A Lewis Lead Remover or lead-removing cloth uses a tight bronze or brass mesh to mechanically remove deposited lead from the bore without scratching the rifling.

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

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

CLP is a multi-purpose product formulated to simultaneously clean fouling, lubricate moving parts, and protect metal surfaces from corrosion.

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

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

A light coat of oil on metal surfaces displaces moisture and prevents oxidation, and storing in a low-humidity environment further reduces corrosion risk.

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

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

Jacketed bullets leave copper deposits in the rifling grooves, which must be removed with ammonia-based solvents specifically designed to dissolve copper.

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

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

Many suppressors can be cleaned in an ultrasonic cleaner or wet tumbled in appropriate media to dissolve and remove carbon buildup from baffles without mechanical damage.