Krebs Custom KV-13

Krebs Custom KV-13

Here's a sturdy AK with vastly improved ergonomics and better accuracy than the original.

By Jorge Amselle (RSS)
July 17, 2013

There are a fair number of manufacturers who focus their energies on making the highest-quality custom guns available. Many work on 1911s and ARs, but among the few that specialize in the AK platform, Marc Krebs from Krebs Custom of Wauconda, IL, stands out.

Krebs is always experimenting and looking for ways to improve the AK platform, and his latest rifle, the KV-13, exemplifies what he has achieved. He normally works with Saigas, but this time he selected another Russian AK-pattern rifle, the VEPR, made by the Molot (Vyatskie Polyany Machine Building Plant) factory.


VEPR AKs are rock-solid, semi-automatic, rotary-bolt, long-stroke gas-piston-operated rifles complete with a hammer-forged, chrome-lined barrel chambered in the traditional 7.62×39 mm. What sets them apart is the primary firearm made by Molot during the Cold War was the RPK squad automatic weapon, and the VEPR is essentially the civilian-legal version of the RPK. This light machine gun is essentially a beefed-up AK with a club-foot stock, a longer or drum magazine, and a longer barrel with a bipod.

Notably, the VEPR uses a standard stamped receiver strengthened for heavy use—it is 50-percent thicker on either side. It also uses a heavy-duty front trunnuion, which is where the barrel connects to the receiver and where the bolt locks. This makes the receiver much stronger, with less flex when fired. The rear of the receiver has an angled cut that requires the use of an adapter to install different stocks.

An effective 2-inch muzzle brake is permanently attached to the 14-inch barrel to make the KV-13 legal to sell without NFA paperwork.

Krebs first cuts the barrel down to 14 inches and then adds a permanently attached muzzle brake to bring the barrel length to 16 inches. The four-prong brake is made by Krebs and effectively reduces muzzle flash. The gas block is the modern type with a 90-degree angle, but it is hard to see because of the custom KeyMod handguard Krebs adds to the rifle.

This handguard provides 9.5 inches of Picatinny rail on top, between the front sight and the dust cover. The sides and bottom of the aluminum unit feature the KeyMod system, co-developed by Noveske and Vltor, which allows the user to more easily install rails or accessories anywhere along the handguard. It also runs 12 inches from the front of the receiver to almost the muzzle brake, which allows for a hands-forward grip while doing an excellent job of dissipating barrel heat.

As for the action, Krebs takes this already reliable system and improves it by smoothing and dehorning the edges. The trigger is tuned, and it is much crisper and more comfortable than any standard AK trigger I have ever tried. Krebs also adds his own outstanding safety selector that can operate as a bolt catch/release using just the trigger finger, thanks to an extension. (This safety selector is also an easy upgrade to almost any AK.)

Sights on the KV-13 are also outstanding. Instead of the usual short-radius, post-and-notch sights found on most AKs, Krebs installs AR-style peep sights with a 19-inch sight radius. The rear sight is adjustable for windage, and the front sight is adjustable for elevation. The left side of the receiver has the standard AK optics rail for installing a scope.

Because of the Krebs-designed trunnion and an AR-style buffer tube, standard AR stocks like the Magpul CTR can be attached, yet can still fold.

The TAPCO SAW Style Pistol Grip is large, but comfortable, and features significant interior storage space. Mated to an ACE folding stock adapter, the mil-spec AR buffer tube will accept any compatible, collapsible AR stock. The rifle I tested has a six-position Magpul CTR stock. Folding the stock is fairly easy and makes this a super-compact long gun for transport or storage. Best of all, it can be fired with the stock folded.

The KV-13 will accept standard AK magazines, and one steel mag was included, though I found the fit to be a bit tight. Fit and finish are outstanding; KrebsKote solvent-proof finish replaces the standard Russian bluing.

On the range, the KV-13 was very handy and well balanced. Empty cases ejected brusquely and tended to land about 20 feet away and slightly forward. There were no failures of any sort, which isn’t surprising given the reputation of both the AK and Krebs.

For accuracy testing, I used a forward-mounted Zeiss Z-Point red-dot sight. This small 1X sight mounted low enough to allow me to co-witness it with the iron sights. The intensity of the illuminated reticle self-adjusts for brightness depending on the amount of ambient light, which is handy when going past shadows or from inside to outside of an enclosure. Though the 3.5-MOA dot in the Z-Point may give up precision at longer ranges, it was adequate for my testing at 100 yards.

Accuracy was combat-acceptable, with groups ranging between 3 and 5 MOA. No one ever claimed the AK was a target rifle, but it is most certainly reliable and tough. Krebs can build AKs to suit the individual customer’s tastes, and options abound.

The KV-13's safety also functions as a bolt-stop and bolt-release lever.


Manufacturer: Krebs Custom; (847) 487-7776,

Action Type: Gas-piston-operated, semi-automatic

Caliber: 7.62×39 mm

Capacity: 30 rounds

Barrel Length: 16 inches (with permanently attached muzzle brake)

Finish: KrebsCote

Sights: AR-style peep

Stock: Folding; Magpul CTR

Length: 26 inches (folded); 33.75 inches (collapsed); 37.75 inches (extended)

Weight: 8.5 pounds

MSRP: $1,850

Shooting Results:

Load Velocity Average Group Size
Hornady 123-grain SST 2,116 4.43
Remington 125 grain PSP 2,074 5.10
Winchester 123-grain FMJ 2,149 3.63

Velocity measured in fps 15 feet from the muzzle for 10 consecutive shots with a Competition Electronics ProChrono chronograph. Accuracy measured in inches for three consecutive, five-shot groups at 100 yards.

Tags: , , , , ,


5 Responses to Krebs Custom KV-13

  1. Ranger D says:

    Hello All,
    I purchased a KV-13 from Krebs Customs in the middle of May and it arrived at my FFL by the end of June. I have a VEPR K in 7.62×39 that I picked up at a Gun Show in 2005. So I already know the quality and feel the Molot made rifles bring to the table. So when I saw the KV-13 was available in 5.45×39, I jumped at the chance to get one. From the first moments I held it in my hands I could tell it was a great quality weapon. The gun shop owner where it was delivered was highly impressed with the trigger, and he knows triggers!

    I did replace the saw grip with a US Palms grip, in black of course. Big difference for me in the comfort level and the handling of the rifle. And no the saw grip did not “need” to be replaced, just personnel choice. I ordered 3 sections of rails for the KeyMod rail system off line and placed them where I wanted them on the hand guard. This whole rail system is really, really solid with a nice feel. However being an AK gloves are required when running hard as it does get heated up. The action is very smooth. The butt stock is rock solid and feels great in the shoulder.

    At the range the KV-13 really shined! I was limited to a 25 yard indoor range with pretty bad lighting. But using VTAC targets, slow and fast fire off a rest from the seated position, 30 round groups averaged a silver dollar size spread. One was smaller, one was a little larger. The rifle did this five times with five different types of bullets (Wolf 60 grain FMJ, Wolf 55 grain HPs, Wolf 55 grain SPs, Silver Bear 60 grain FMJ, and Hornady V-Max Steel Case 60 Grain FMJ). Keep in mind that I used iron sites only, no red dots. I experienced no FTF, jams, or malfunctions of any kind.

    Standing Reflex fire drills firing singles and controlled pairs were smooth but tiring as this rifle weighs in the 9 pound range with full 30 round mag. That’s mostly my fault with injuries from OIF. Again, the VTAC torso targets were really useful. Rounds stayed in the head, chest, and pelvis “Kill Zones”.

    I know many Gun Fans will not be able to afford a Battle Rifle like this one. This rifle is not cheap in price, but it’s also not cheap in quality. The gunsmith’s at Krebs Customs take a great rifle and makes it better. We all know that old saying “You get what you pay for” right? Well with this rifle, you get a small Battle Tank.

    Great Rifle. Great Manufacture. I will be buying more weapons from Mark and Brian at Krebs Custom.
    Ranger D

  2. Tim says:

    Vepr rifles in general, and Krebs rifles in particular usually group much better than 4 and 5 inches. I believe the problem may be the ammo you used for this review. I could be wrong, but I believe Remington, and I know Hornady, use .308 bullets in their 7.62×39 amm0, while AK barrels are chambered for .311. (I could not tell you what Winchester uses.) But one can find many posts on various forums from people experiencing much larger groups from their AKs when shooting American made 7.62×39 ammo loaded with .308 bullets.
    Find some Golden Tiger 7.62×39 and I bet your groups will average about 3 inches.

    • Sct says:

      Agree with Tim. My stock Vepr will shoot 4 Moa with a red dot using Golden Tiger. That shrinks to about 2 Moa with an 8x posp for a 5 shot group. Can’t ask for than that out of an AK..

  3. Tim says:

    A comprehensive video review of this rifle can be found here:

    The reviewer in the video shoots a three shot 1.75 MOA group using Golden Tiger 7.62×39.

  4. Icyou says:

    Beautiful rifle for sure. My main question is can I buy the railed fore end buy itself? Also what’s the chance of a non m4 style stock, in NATO length?

Leave a Reply

Your email address will not be published. Required fields are marked *


You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>