You want a suppressor that hushes the muzzle, tames back pressure, and sheds heat before your gas system throws a tantrum. Zastava’s ZVUK answers with Purposely Induced Porosity™ (PIP™), a mouthful that hides a very elegant idea: shape the metal itself so the gas obeys you. Then make the whole thing out of titanium and keep it light enough for real AK use.
First, the quick lay of the land
ZVUK uses a 3D-printed, monolithic titanium body-to-core structure. That single-piece construction locks in strength, controls weight, and sets the stage for PIP to do its job. The can targets AK shooters and lists use with .30 cal or smaller cartridges that share the same case capacity.
Zastava rates it for full-auto duty and calls out reduced back pressure, and a quieter report as core outcomes. Specs read 8.3″ overall length, 13.4 oz weight, and a major/minor diameter of 1.93″/1.6″. Coating: high-temp Cerakote.
Want the AK-friendly bits? Zastava’s write-up notes a 14×1 LH thread pattern and HUB (1.375×24) mount compatibility, while Zastava also sells a 26×1 LH-to-1.375×24 RH hub adaptor for ZPAP 85/92 users. So you screw it on directly or bridge to the industry-standard HUB ecosystem with the adapter. Options help, especially on AKs.
So…what is Purposely Induced Porosity?
Think of PIP as a metal lattice that you design on purpose—a network of tiny, tortuous pathways inside the suppressor core. Gas blasts forward, then the micro-structure splits, spreads, and slows it. That does three useful things at once:
- Flattens the pressure curve before gas reaches the exit, which trims the muzzle blast and eases the slap your action would otherwise feel.
- Moves heat into the metal fast because that huge internal surface area acts like a heat sponge.
- Steers flow away from your face, because lower internal pressure means less gas drives back down the barrel.
Zastava explicitly ties PIP to lighter weight, high strength, superior heat dissipation, and reduced back pressure inside the ZVUK. The monolithic, 3D-printed architecture gives PIP a perfect home.
Why titanium plus 3D printing makes this possible
Titanium hits the trifecta for a hard-run rifle can: strength, corrosion resistance, and high-temperature tolerance. 3D printing then lets engineers “draw” internal geometry that machining can’t reach.
Instead of simple baffles, you get a continuous structure that blends solid walls with graded porosity where gas needs the most work. Zastava calls out that monolithic body-to-core construction and links the result to strength, density control, and thermal behavior—all levers that PIP pulls. Full-auto rating shows confidence in both the material and the architecture.
What you feel on the rifle
- Quieter report: Slower, cooler gas doesn’t yell as much at the muzzle. Zastava frames the outcome as a “quieter, more reliable shooting experience.” Your neighbors may still hear shots, but they won’t hear drama.
- Less blowback: Lower internal pressure pushes less crud into your action and your eyes. Zastava calls out reduced back pressure as a design goal. Your lungs send thanks.
The AK-first fit and the mounting story
AK users juggle thread standards, muzzle devices, and gas quirks. ZVUK meets the platform where it lives. The product materials point to direct-thread use and AK-centric threads, while the Zastava hub adaptor brings you into 1.375×24 land for broader mount choices. That flexibility matters if you run multiple rifles or prefer a specific QD system.
Numbers that matter (because specs tell the truth)
- Length: 8.3″
- Weight: 13.4 oz
- Diameter: 1.93″ major / 1.6″ minor
- Material: 3D-printed titanium with PIP
- Rating: Full-auto
- Caliber window: Up to 7.62×39 or smaller with equal/less case capacity
- Finish: High-temp Cerakote
Patent support (aka, not a buzzword)
Zastava notes “multiple U.S. patents” behind the design. The broader Purposely Induced Porosity concept appears in U.S. patent literature that covers monolithic suppressor with intentionally porous sections. That track record signals real IP, not a marketing flourish.
The short version
PIP turns the suppressor into a smart labyrinth. Gas loses speed, heat moves into the metal, and pressure drops before anything vents where you don’t want it. Pair that with a monolithic titanium build, and the result feels light, runs cool, and treats your AK with respect.
ZVUK packages that formula with AK-friendly specs, direct-thread simplicity, and HUB compatibility via adaptor. It reads like an engineer’s wish list and a shooter’s upgrade—on the same line.
