Short, precise definitions of the key terms about suppressors (sound moderators), muzzle brakes and gas management. For those choosing a device for their firearm.
In brief: A suppressor, or sound moderator (also called a silencer), is a device that attaches to the muzzle end of the barrel. It reduces the sound of the shot, muzzle flash and part of the recoil by letting the propellant gases expand and gradually cool inside a system of internal chambers before they exit into the air.
Suppressor catalog →In brief: A muzzle brake is a muzzle device that vents the propellant gases to the sides and rearward, reducing recoil and muzzle rise. Unlike a suppressor, a muzzle brake does not dampen the sound: it manages recoil, and for a shooter standing to the side it is often even louder.
In brief: An integrated suppressor slips over the barrel by 10-12 cm with its chamber instead of extending the system forward. By overlapping the barrel, the device gains more internal volume for sound suppression at a shorter overall length. Its takedown design lets you clean the chambers and sometimes adjust weight and dimensions.
ZERO technology →In brief: ZERO (Zero Flow Resistance) is the proprietary NEMESIS gas-management system. Instead of simple suppression, it minimizes backpressure, dissipates gas energy across multiple stages and stabilizes the firearm's behavior after the shot. In NEMESIS ZERO devices, sound reduction reaches roughly 55-60 dB.
Watch the ZERO test →In brief: Backpressure is the excess propellant gas that a suppressor pushes back into the receiver. It fouls the mechanism, drives gas and soot toward the shooter and speeds up wear and heating of the firearm. Gas-management systems such as NEMESIS ZERO are aimed precisely at reducing backpressure.
In brief: A suppressor is chosen by two parameters: the barrel caliber (for example .223 Rem, 7.62×39, .308 Win) and the type of muzzle thread (for example 1/2×28, 5/8×24, M14×1). The device's caliber must match the cartridge or be larger, and the thread must exactly match the thread on your barrel.
Selection by platform →In brief: Durable suppressors are made from titanium alloys (for example Ti-6Al-4V) and heat-resistant steels; external parts can be made of 7075-T6 aluminum. Titanium gives a low weight-to-strength ratio and resists corrosion and high temperatures, so it withstands the service life of intensive shooting.
In brief: A shot from a rifled firearm reaches about 160-165 dB. A device's effectiveness depends on its design: typical suppressors cut the peak level by 25-35 dB, while integrated NEMESIS ZERO systems with large chamber volume cut it by roughly 55-60 dB. Every -10 dB is perceived as twice as quiet.
In brief: All NEMESIS devices are created exclusively for civilian use on sporting firearms and hunting carbines. They help protect hearing, reduce recoil and improve shooting comfort. Their legal status and purchase requirements are defined by the current laws of Ukraine; the buyer is responsible for complying with them.
About NEMESIS →In brief: First determine the barrel's caliber and muzzle thread, the firearm type (AR platform, carbine, bolt-action) and your main priority - quietness, weight or durability. Then pick a device for that caliber and thread; for integrated models, account for the chamber overlapping the barrel. NEMESIS offers selection by platform and caliber.
Find a model →Three different muzzle devices solve different tasks. A short comparison so you don't confuse them when choosing.
| Parameter | Suppressor | Muzzle brake | Integrated suppressor |
|---|---|---|---|
| Main function | Dampening sound and flash | Reducing recoil and muzzle rise | Dampening sound with barrel overlap |
| Effect on sound | Significantly quieter | No reduction (often louder to the side) | Maximally quiet thanks to volume |
| Effect on recoil | Moderately reduces | Strongly reduces | Reduces |
| System dimensions | Extends the barrel forward | Adds almost no length | More compact than a classic suppressor |
