Last updated September 2026 · By Nick Hall, covers unusual builds, conversions, and Cold War designs for USA Gun Shop
Quick take: One of the most talked-about items at GunCon 2026 was not a gun at all, but a kit. Stuff & Things Inc, better known as STINC, showed off a drop-in conversion that turns a PSA Krink into a bullpup styled after the Russian OTs-14 Groza. It is a niche, enthusiast project rather than a practical upgrade, but it scratches a very specific itch for AK fans who have always wanted the “Groza at home” look.
- What it is: A drop-in bullpup conversion kit that reshapes a PSA Krink into an OTs-14 Groza-style rifle.
- Key detail: It relocates the trigger forward and adds a Groza-style carry handle with an integrated rear sight.
- Fitment: Built for the PSA Krink in 300 BLK, 7.62×39, and 5.56; the maker says it will not fit anything else.
- Who it’s for: AK hobbyists and collectors chasing a distinctive look, not shooters after a practical carbine.
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What STINC showed at GunCon 2026
The STINC Groza kit is a conversion that gives an AK-pattern Krink the silhouette and forward-trigger layout of the OTs-14 Groza. Rather than a whole new firearm, it is a set of parts you install on a host gun. The kit relocates the trigger forward with a new grip module and trigger guard, then uses a replacement internal trigger and linkage to connect that forward trigger back to the AK’s original fire-control group. It tops the package off with the Groza’s signature carry handle, which includes an adjustable rear sight.
STINC describes the design as a dimensionally accurate take on the real Groza that leans on simplified machining and assembly to make it practical to produce. The company is candid that AKs vary in tolerance, so some hand-fitting or light gunsmithing may be required to get everything seated correctly. If you are new to the platform, our AK-47 Buyers Guide is a good place to start before you start modifying one.
The real OTs-14 Groza it is based on
The OTs-14 Groza is a Russian bullpup developed in the early 1990s at the TsKIB SOO design bureau in Tula. Built on the bones of the AKS-74U, it was created to give close-quarters troops a compact, hard-hitting package. The base version was chambered in the subsonic 9x39mm cartridge, while a variant known as the Groza-1 used the more common 7.62x39mm. It was adopted by Russian Interior Ministry forces and saw use with special-purpose units, and it has been a cult favorite among firearm enthusiasts ever since.
That mystique is exactly what the STINC kit is selling. The Groza has always been rare and hard to get in the United States, so a bolt-on way to capture its look on a common AK platform has obvious appeal to collectors. For a broader look at the ecosystem this plugs into, see our guide to the 9 Best 7.62×39 Rifles for 2026.
Why you cannot just buy a real Groza
It is a fair question, and the answer is why a bolt-on clone exists at all. The OTs-14 was never a commercial export. It was built in small numbers at a state design bureau for Interior Ministry and special-purpose units, and Russia never had any interest in selling it to American collectors.
Even if it had, three separate walls stand in the way. A select-fire Groza could never be transferable here, because the machine gun registry closed in May 1986 and nothing manufactured after that date can be sold to civilians. A semi-automatic version would still be an imported rifle facing the sporting-purposes test that keeps AK pattern guns out unless they are reconfigured. And since 2014 the sanctions on Russian arms exports have closed the door on the rest, which is the same reason Russian ammunition and Saiga rifles disappeared from shelves.
The practical upshot is that no amount of money and paperwork gets you a genuine one. A handful of pre-1986 examples do not exist in the United States, there is no import path, and there is no domestic manufacturer building the pattern. That is precisely the gap STINC is aiming at: not a replica of the mechanism, which nobody can sell you, but the silhouette and the layout on a host gun you can walk into a shop and buy today.
Judge the kit on that basis and it makes more sense. It is not pretending to be a Groza. It is the only way most people will ever hold something shaped like one.
What you need to know before buying
The kit fits the PSA Krink specifically, and STINC is blunt that it will not drop onto other AKs without significant work. It is built from metal with a black phosphate finish, and the base kit includes the carry handle with rear sight, the forward grip module and trigger guard, and the replacement trigger and linkage. Items like a stock, barrel extension, and wood furniture are sold separately, so a finished build costs more than the kit alone. STINC list the kit at $425 to $645 depending on configuration, and its store shows it in stock rather than on pre-order. Confirm both directly before you order, because small-shop runs like this one move quickly.
There is a legal wrinkle worth flagging, and it is the single most important thing on this page. STINC put it in capitals on their own listing: the stock option will make your Krink a short-barreled rifle. The kit itself does not do that. How you finish the build decides its legal category, and the section below sets out exactly where the line falls. Anyone deep enough into AKs to want this will also enjoy our list of AK-47 Upgrades That Matter (2026).
What the finished build actually costs
The kit price is the smaller half of this project, and almost every write-up quotes it as though it were the whole bill. You also need the host gun, and a Krink is not cheap.
Soviet Arms Krink pistols, the ones PSA sell and the ones this kit is cut for, run from about $900 to $1,100 depending on caliber and furniture. The 5.56 sits at the bottom of that range and the 5.45 and 7.62 versions sit above it. Add the kit at $425 to $645 and a realistic all-in figure for a finished Groza clone is $1,325 to $1,745, before you have bought a stock, a barrel extension or the wood furniture that makes it look the part.
Worth noting what those listings call themselves: SBR Ready. That is not marketing garnish, it is the whole legal story of this build in two words, and it leads straight into the next section.
Brace or stock: where the NFA line falls
Two things get muddled constantly here, so take them separately.
The brace question is settled and the answer is good news. The ATF rule that reclassified braced pistols was vacated outright on 13 June 2024 by the US District Court for the Northern District of Texas in Mock v. Garland, and the government abandoned its appeal in July 2025. A Krink with a brace on it is a pistol. No stamp, no registration, nothing to file. We set out the full timeline in our Draco buying guide, and it applies identically to a Krink.
The stock question is completely separate and has not changed at all. The National Firearms Act definition of a short-barreled rifle was never touched by that litigation. Fit an actual shoulder stock to a Krink with a barrel under 16 inches and you have made an SBR. That means a Form 1, a $200 tax stamp and ATF approval before you assemble it, not after. A dead brace rule is not permission to fit a stock, and this is exactly the trap STINC is warning about in capitals on their own product page.
There is a third path if you want the stock without the paperwork: a barrel extension pinned and welded to take the barrel to 16 inches or more. Permanently attached, which is the point, and it turns the host into an ordinary rifle. It also makes the finished gun considerably longer, which fights the compact silhouette that made you want a Groza in the first place. Most people building this kit will either brace it or file the Form 1 and wait.
Your state is the other half of the answer, and it is the half that catches online buyers out. A number of states regulate short-barreled and braced firearms more tightly than federal law does, and no federal position overrides that. Check yours before the money goes anywhere.
Is the Groza kit worth it?
This is a novelty build, and that is the whole point. A bullpup conversion trades the familiar AK ergonomics for a compact, unusual layout, and the forward-trigger linkage will never feel like a purpose-built rifle. If you want a practical, do-everything carbine, a standard Krink or AK does the job better and cheaper.
But if you are the kind of enthusiast who already owns the practical stuff and wants something that turns heads and tells a Cold War story, the STINC Groza kit is a genuinely fun project. It brings one of the internet’s favorite exotic rifles within reach of anyone with a Krink and a weekend. For where bullpups shine as complete guns, browse the 7 Best Bullpup Rifles (2026).
Frequently Asked Questions
What does the STINC Groza kit cost?
STINC list it at $425 to $645 depending on configuration. That is the kit alone. A Krink host pistol adds roughly $900 to $1,100, so a finished build realistically runs $1,325 to $1,745 before a stock, barrel extension or wood furniture.
Which rifles does the Groza kit fit?
PSA Krink pistols in 300 BLK, 7.62x39 and 5.56. STINC are blunt that it will not fit anything other than a Krink or AK-74U pattern gun, and that other Krink models may need light to heavy fitting work.
Does the Groza kit make my Krink an SBR?
The kit on its own does not. Adding the stock option does, because a shoulder stock on a barrel under 16 inches makes a short-barreled rifle under the NFA. That means a Form 1, a $200 stamp and approval before assembly. A brace is not a stock and does not trigger any of that.
Are pistol braces still legal in 2026?
Yes. The ATF brace rule was vacated on 13 June 2024 and the government dropped its appeal in July 2025, so there is no rule left to comply with. What did not change is the definition of a short-barreled rifle, which is why a stock and a brace are treated so differently.
Do I need a gunsmith to fit the Groza kit?
Maybe. STINC are upfront that AK tolerances vary and that some hand-fitting or light gunsmithing may be needed to seat everything correctly. It is a drop-in design rather than a guaranteed drop-in result.
What is the real OTs-14 Groza?
A Russian bullpup developed in the early 1990s at the TsKIB SOO bureau in Tula, built on AKS-74U mechanicals for close-quarters use. The base gun was chambered in subsonic 9x39mm, with a Groza-1 variant in 7.62x39. It has never been readily available in the United States, which is most of its appeal.
Related Reading
- 9 Best 7.62×39 Rifles for 2026
- AK-47 Buyers Guide
- 7 Best Bullpup Rifles (2026)
- AK-47 Upgrades That Matter (2026)
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