Gunsmith Certification Practice Test

This practice test is designed to help you prepare for a gunsmith certification exam by testing your knowledge of firearm design, function, safety, maintenance, and legal considerations.

It includes 50 multiple-choice questions.

Each question has four possible answers with only one correct option.

Good luck!

Gunsmith Certification Practice Test

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Your answers are highlighted below.
Question 1
What is the primary function of a headspace gauge?
A
Measure chamber pressure
B
Determine barrel twist
C
Check the fit of the firing pin
D
Verify correct chamber dimensions
Question 2
What component controls the timing in a semi-automatic rifle?
A
Magazine follower
B
Buffer spring
C
Gas system
D
Muzzle brake
Question 3
Which machining process is most commonly used to produce rifling in barrels?
A
Honing
B
Milling
C
Broaching
D
Casting
Question 4
The forcing cone is found in which type of firearm?
A
Bolt-action rifle
B
Semi-automatic pistol
C
Revolver
D
Lever-action rifle
Question 5
Which metal is most commonly used for modern firearm barrels?
A
Brass
B
Cast iron
C
Stainless steel
D
Copper
Question 6
What is the function of a sear?
A
Reduces recoil
B
Secures the magazine
C
Releases the hammer or striker
D
Supports the bolt
Question 7
What is the typical twist rate for a .223 Remington barrel?
A
1:7
B
1:12
C
1:9
D
1:10
Question 8
Which part of a bolt-action rifle interfaces directly with the cartridge rim?
A
Gas ring
B
Extractor
C
Safety
D
Trigger
Question 9
Which of the following is an example of a rimfire cartridge?
A
.30-06 Springfield
B
.308 Winchester
C
.22 LR
D
9mm Luger
Question 10
The primary role of a gunsmith includes:
A
Selling firearms
B
Designing ammunition
C
Repairing and modifying firearms
D
Shooting competitions
Question 11
What is the minimum number of grooves in a rifled barrel?
A
2
B
4
C
3
D
6
Question 12
What type of firearm action uses a sliding fore-end to cycle?
A
Pump-action
B
Break-action
C
Lever-action
D
Bolt-action
Question 13
Which material is often used for bedding a rifle action?
A
Lead
B
Graphite
C
Epoxy
D
Clay
Question 14
Which tool is best for measuring internal bore diameter?
A
Caliper
B
Micrometer
C
Bore gauge
D
Depth gauge
Question 15
What is the purpose of a crown on a rifle barrel?
A
Decorate the muzzle
B
Reduce noise
C
Protect rifling and improve accuracy
D
Secure the flash suppressor
Question 16
What is the term for the distance a bullet travels in the barrel before engaging in rifling?
A
Freebore
B
Lead
C
Throat
D
Leade
Question 17
What is the typical measurement unit for bullet diameter?
A
PSI
B
Inches
C
Feet
D
Milliliters
Question 18
What part of a shotgun determines the spread of pellets?
A
Bolt
B
Barrel length
C
Choke
D
Extractor
Question 19
Which agency regulates the commercial manufacture of firearms in the U.S.?
A
DHS
B
FBI
C
ATF
D
DOJ
Question 20
The function of a recoil spring is to: 
A
Reduce sound
B
Absorb magazine tension
C
Return the slide to a battery
D
Lock the breech
Question 21
Which of the following is a centerfire rifle cartridge?
A
.22 Short
B
.17 HMR
C
.270 Winchester
D
.22 LR
Question 22
Which action type uses a falling block to load and unload?
A
Pump
B
Single-shot
C
Revolver
D
Semi-auto
Question 23
What is the first step in diagnosing a misfire?
A
Polish the chamber
B
Check the ammo
C
Replace the barrel
D
Disassemble the trigger
Question 24
A Parkerized finish is:
A
Chrome-based
B
A type of bluing
C
A phosphate coating
D
A lacquer finish
Question 25
Which gun part contains the firing pin? 
A
Trigger
B
Sear
C
Bolt
D
Magazine
Question 26
What is "timing" in a revolver?
A
Barrel rifling rotation
B
Cylinder indexing and lock-up synchronization
C
Bullet velocity
D
Trigger reset
Question 27
What does “MOA” stand for?
A
Muzzle of Action
B
Minute of Accuracy
C
Minute of Angle
D
Measure of Arc
Question 28
Which action type does NOT require external manual cycling?
A
Break-action
B
Pump-action
C
Semi-automatic
D
Bolt-action
Question 29
Which of these tools is used to recrown a barrel?
A
Tap and die
B
Lathe
C
Bench grinder
D
Bevel cutter
Question 30
Which material is best for rust prevention on gunmetal?
A
Water
B
Gun oil
C
Isopropyl alcohol
D
Baking soda
Question 31
What is the most likely cause of light primer strikes?
A
Dirty muzzle
B
Worn firing pin spring
C
Over-oiled stock
D
Tight headspace
Question 32
What is the primary function of a flash suppressor?
A
Reduce noise
B
Improve accuracy
C
Conceal muzzle flash
D
Reduce recoil
Question 33
Which of these firearm finishes offers high corrosion resistance?
A
Bluing
B
Parkerizing
C
Cerakote
D
Oil finish
Question 34
What is the purpose of a feed ramp?
A
Hold the cartridge
B
Align bullet with rifling
C
Guide round into the chamber
D
Protect extractor
Question 35
What is an acceptable method of removing light surface rust?
A
Steel brush
B
Sandpaper
C
Brass wool and oil
D
Bleach
Question 36
What is “headspace” in a firearm?
A
Distance from muzzle to crown
B
Space behind magazine
C
Distance between the bolt face and chamber shoulder
D
Area behind the sights
Question 37
What part ensures the firearm fires only when the trigger is pulled?
A
Extractor
B
Recoil spring
C
Disconnector
D
Slide
Question 38
Which of the following gunsmith tasks requires an FFL (Federal Firearms License)?
A
Scope mounting
B
Trigger polishing
C
Re-bluing a receiver
D
Manufacturing a receiver
Question 39
What tool is used for installing sights?
A
Caliper
B
Punch set
C
Torque wrench
D
Lathe
Question 40
Which chemical is often used in cold bluing?
A
Ferric chloride
B
Sulfuric acid
C
Selenious acid
D
Ammonium nitrate
Question 41
What is the safe direction in firearm safety?
A
Toward the ground
B
Toward the sky
C
Away from people and valuables
D
Toward the target
Question 42
What is a common cause of a stovepipe malfunction?
A
Dirty barrel
B
Weak extractor
C
Low slide velocity
D
Loose trigger
Question 43
Which type of steel is often used for firearm springs?
A
4140
B
1045
C
1095
D
5160
Question 44
What is the best way to clean a gun barrel?
A
Steel wool
B
Patching with solvent
C
Soaking in water
D
Rubbing compound
Question 45
What is the common term for bolt face wear causing misfeeds?
A
Blowback
B
Peening
C
Gas lock
D
Drag
Question 46
A gunsmith drill press must have:
A
Adjustable laser
B
Table vise
C
Variable speed
D
Torque control
Question 47
A broken extractor will cause:
A
Overpressure
B
Failure to extract
C
Magazine drop
D
Light primer strike
Question 48
In reloading, case trimming is necessary to:
A
Lighten the load
B
Prevent overpressure
C
Fit magazine
D
Ensure chambering
Question 49
What is the term for a shotgun’s internal constriction at the muzzle?
A
Forcing cone
B
Bore diameter
C
Choke
D
Breech
Question 50
Which tool measures trigger pull weight?
A
Torque wrench
B
Spring gauge
C
Dial indicator
D
Trigger scale
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There are 50 questions to complete.
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