AK Buying & Inspection Guide

What to Check Before You Buy

Receiver, trunnions, rivets, bolt and carrier, locking lugs, bore, chamber, sights, magazine fit, optic rails, muzzle threads, furniture, markings, used-rifle history, and separating normal AK character from defects that should make you walk away.

Pattern   |   Receiver   |   Rivets   |   Bolt & Carrier   |   Bore   |   Sights   |   Fitment

Buying an AK by asking “Is this brand good?” leaves way too much information on the table.

You need to know what pattern you're looking at, how the receiver is built, what parts family it belongs to, whether the structural pieces are sound, whether the action moves correctly, whether the rifle can reasonably be zeroed, and whether somebody before you has already attacked it with a grinder and confidence.

A pretty rifle can be mechanically wrong. An ugly rifle can run for decades. Inspect function and structure first. Judge cosmetics after that.

You're not looking for a perfect AK. You're looking for a mechanically sound AK.

1. Identify the exact manufacturer, model, caliber and receiver pattern.
2. Look over the receiver and trunnion areas for cracks, deformation or loose structural parts.
3. Inspect rivets on stamped rifles.
4. Check sight and gas-block alignment.
5. Inspect bore, chamber and muzzle.
6. Inspect bolt, lugs, extractor and carrier wear.
7. Check action travel and normal lockup.
8. Check magazine fit with the correct magazine family.
9. Inspect optic rail and muzzle interface if you plan to use them.
10. On a used rifle, ask what has been changed.

Don't start by asking whether the furniture looks cool.

Identify:

• Manufacturer.
• Model.
• Country of manufacture.
• Importer where applicable.
• Caliber.
• Stamped or milled receiver.
• AKM, Yugo/M70, AK-74/100, RPK, VEPR, PSL or other family.
• Fixed, side-folding or underfolding rear configuration.
• Magazine and muzzle-interface family.

Receiver markings can tell you far more than the seller saying “it's a Russian-style AK.”

Modern Zastava rifles, for example, normally identify model, caliber, import information and the main serial number on the receiver. Zastava also notes that bolts, carriers and other components may carry full or partial matching serials depending on the model and production.

Matching-number components can matter for collector value and can provide useful history. They do not replace an actual mechanical inspection.

Arsenal's SAM7 family is a current example of a forged-and-milled AK receiver. That construction means you're not inspecting it with the exact same trunnion/rivet checklist as a stamped AKM.

Finish scratches, handling marks and ordinary wear don't bother us much.

What does matter:

• Cracks.
• Severe bending or deformation.
• Evidence of badly performed cutting or welding.
• Loose structural components.
• Damaged rails that interfere with carrier travel.
• Serious corrosion or pitting in structural areas.
• Unexplained modifications to pin holes or receiver geometry.

The front and rear trunnions are structural parts of a stamped AK build.

Rifle Dynamics' AK-building material explains why receiver dimpling and correct swell-neck riveting matter: the trunnion should be tightly mated to the receiver so recoil does not allow it to walk and progressively load the rivets.

During inspection, look for:

• Rivet heads that appear firmly formed and seated.
• No obvious rivet movement.
• No receiver deformation spreading from the rivet holes.
• No obvious structural gap or movement between trunnion and receiver.
• No sheared or visibly failing rivets.

Rivet heads are not jewelry. Minor cosmetic variation in shape or finish is less important than whether the trunnion is tightly supported and the rivet is structurally doing its job. We're looking for looseness, movement, shearing and receiver damage—not whether every rivet belongs in a machining-center glamour shot.

The front trunnion is where the bolt locks on a traditional stamped AK.

Zastava's current parts-kit inspection guidance specifically recommends checking trunnion locking surfaces and rivet holes for deformation or cracks.

On a complete rifle, pay attention to:

• Cracks.
• Chipping around locking surfaces.
• Heavy displaced metal.
• Unusual peening that is progressing badly.
• Evidence that the trunnion itself is moving in the receiver.

Zastava's current inspection material repeatedly calls out the bolt face, locking lugs, extractor claw, carrier rails and cam surfaces as the places worth watching.

Normal:

• Smooth contact polishing.
• Finish wear along repeatable mating surfaces.
• Consistent wear pattern that is not producing burrs or binding.

Concerning:

• Cracks.
• Chipped lug edges.
• Deep galling.
• Sharp raised burrs.
• Rapidly progressing peening.
• Damage causing obvious binding.

On a used rifle, ask whether the bolt, barrel or trunnion has ever been replaced or rebuilt. Those parts establish the locking relationship. If that history is unknown and wear or lockup looks suspicious, proper headspace verification by someone qualified to evaluate the rifle is a smarter move than guessing from how easily the charging handle closes.

An AK operating group interacts with the rails, hammer, bolt cam path and recoil spring.

So you're not looking for an action that feels like an empty drawer sliding on ball bearings.

You're looking for movement that is consistent and mechanically explainable rather than:

• Hard unexplained stopping points.
• Grinding.
• Carrier visibly binding in the receiver.
• Bolt failing to rotate normally.
• Parts that obviously do not seat correctly.

Shine light through the bore and look at the condition rather than expecting every used rifle to look brand new.

Check for:

• Obstructions.
• Heavy corrosion.
• Severe pitting.
• Obvious crown/muzzle damage.
• Heavy chamber corrosion or contamination.
• Evidence of abuse inconsistent with the seller's story.

Chrome lining can make a used bore far more corrosion resistant, but chrome-lined does not mean incapable of damage.

Look down the rifle and compare the front sight block, gas block and receiver/barrel relationship.

A sight does not have to look laser-perfect to function. The front windage drum exists specifically to establish zero.

What becomes concerning is a rifle with obvious component cant combined with:

• Front sight already pushed near the edge of useful adjustment.
• No remaining adjustment to obtain zero.
• Visible mechanical damage.
• Seller admitting the rifle cannot be zeroed.

Use a magazine known to be appropriate for the rifle family.

You're looking for:

• Positive front-lug engagement on traditional rock-and-lock rifles.
• Positive rear catch engagement.
• Magazine remains retained.
• Reasonable insertion and removal.
• No obvious receiver/mag-catch damage.

Some side-to-side movement is not automatically a problem. Poor lockup or a magazine sitting at an obviously wrong height is.

5.56 AK magazine compatibility is rifle-family specific. Before interpreting fit as good or bad, make sure you're testing a magazine actually intended for that rifle.

If the rifle has a side rail and you intend to use it, inspect it now rather than discovering problems after buying a $200 mount.

Look for:

• Visible damage.
• Loose mounting to the receiver.
• Obvious distortion.
• Interference from unusual modifications.
• Correct AKM/Yugo/other rail pattern for the mount you intend to use.

Remove the existing device when practical and permitted during the inspection so you can see what you're actually buying.

Check:

• Thread condition.
• Muzzle crown condition.
• Front-sight detent function where applicable.
• Correct thread family.
• Signs of crude thread modification or adapter stacking.

If the rifle will eventually host a suppressor, muzzle-thread and bore alignment deserve substantially more scrutiny than “the brake screws on.”

Stocks and handguards are replaceable, so cosmetic condition is rarely what makes or breaks the rifle.

Still inspect for:

• Cracked stock around attachment points.
• Loose stock interface.
• Damaged folding hinge or latch.
• Broken handguards.
• Heat damage.
• Selector movement.
• Trigger reset and normal fire-control behavior.
• Signs that somebody modified receiver/furniture interfaces poorly.

A used rifle may be completely factory-original.

It may also have been:

• Built from a parts kit.
• Rebarreled.
• Converted from another configuration.
• Refinished.
• Had the bolt replaced.
• Had trigger work performed.
• Had the gas system modified.
• Had furniture retaining hardware removed.
• Had muzzle threads cut or adapted.
• Had receiver work performed.

None of those automatically makes it bad. Unknown workmanship is what changes the inspection standard.

Properly built kit guns can be excellent rifles. Poorly built kit guns can combine worn surplus components with bad riveting, bad barrel work and questionable locking geometry. Judge the workmanship and component condition—not the phrase “parts kit” by itself.

Don't assume a “lifetime warranty” follows the rifle forever.

Zastava's current written warranty, for example, is extended to the original purchaser and terminates when ownership transfers. It specifically lists the receiver, bolt carrier, bolt, fire-control group, pins, retainers and rivets among covered ZPAP components for that original purchaser.

Warranty terms are manufacturer-specific and change. Check them before assigning warranty value to a used rifle.

• Cracked receiver, trunnion, bolt or locking lugs.
• Loose trunnion or structural rivets.
• Severe carrier/bolt binding.
• Obvious structural welding or grinding of unknown origin.
• Rifle cannot obtain a normal zero.
• Heavy bore/chamber corrosion inconsistent with price or description.
• Suspicious bolt/barrel replacement with no information about the work.
• Damaged receiver rails.
• Seller refuses basic inspection while claiming the rifle is mechanically perfect.
• Anything that makes the locking relationship genuinely questionable.

• Normal finish wear.
• Honest wood dents.
• A front-sight drum that isn't perfectly centered but still has normal adjustment.
• Smooth polishing on carrier rails and bolt-lug contact areas.
• Some magazine movement with secure functional lockup.
• Normal tool or machining marks that do not affect function.
• A properly documented and properly executed parts-kit build.

1. Identify the exact rifle and pattern.
2. Verify caliber and markings.
3. Inspect receiver, trunnions and structural assembly.
4. Inspect stamped-receiver rivets.
5. Inspect bore, chamber and muzzle.
6. Inspect bolt, lugs, extractor and carrier.
7. Check carrier travel and normal mechanical lockup.
8. Inspect sight and gas-block alignment.
9. Check correct magazine fit.
10. Inspect side rail and muzzle interface.
11. Check stock, handguards, folding mechanisms and controls.
12. Ask about modifications and repair history.
13. Then decide whether the price matches the condition and configuration.

A reputable factory improves your odds of getting a well-made rifle.

It does not give one individual rifle diplomatic immunity from inspection.

Likewise, an older or lesser-known rifle should not automatically be condemned if the actual construction, condition and function check out.

Buy the rifle in front of you, not just the reputation attached to the roll mark.

AK buying gets a lot easier once you stop trying to judge quality from paint, furniture and internet reputation.

Identify the pattern. Inspect the structural assembly. Read the wear. Check the locking components. Make sure the rifle has useful sight adjustment. Verify the magazine and accessory interfaces you actually care about.

Then decide how much the cosmetic stuff matters to you.

A scratch can be refinished. Furniture can be replaced. A questionable locking system, loose trunnion or cracked receiver is a different conversation entirely.

• Zastava Arms USA — ZPAP M70 Owner's Manual
  Factory inspection, buyer inspection at purchase, receiver/operating-part identification and general maintenance baseline.
• Zastava Arms USA — Practical ZPAP Inspection Routine
  Exterior inspection, dust-cover/recoil-spring fit, bolt, extractor, ejector, bore, chamber, magazines and recurring inspection.
• Zastava Arms USA — ZPAP Wear Points at 500, 2,000 and 5,000 Rounds
  Bolt lugs, extractor, carrier rails, receiver rails, chamber and normal contact-polish patterns.
• Zastava Arms USA — Inspecting and Prepping Zastava Parts Kits Safely
  Trunnion locking surfaces, rivet holes, bolt/carrier, springs and structural-condition checks.
• Zastava Arms USA — Serial Numbers, Proof Marks & Factory Codes
  Model, caliber, importer, serial and component-marking locations.
• Rifle Dynamics — AK Receiver Dimpling & Riveting
  Relationship between stamped receiver, trunnion, dimpling and rivet support under recoil.
• Arsenal Inc. — SAM7 Receiver Construction
  Forged-and-milled receiver construction as a comparison with stamped/trunnion AK architecture.
• Zastava Arms USA — Limited Lifetime Warranty
  Current ZPAP warranty coverage, original-purchaser limitation and covered structural/fire-control components.

Research reviewed October 2, 2026. AK construction, warranty coverage and component interfaces vary substantially by manufacturer, model and production era. Verify the exact rifle rather than applying one inspection assumption to the entire platform.

IRONKELLS ARMORY | AK FORGE FILES

Inspect the Steel Before You Buy the Story.

Pattern. Structure. Lockup. Wear. Fitment. Then worry about scratches and furniture.