GunsAmerica - The Quietest Suppressor We’ve Ever Tested!

The TENET VESPER is built around one goal: maximum sound reduction in a package light enough to carry on a hunting rifle.

Built from additively manufactured grade 5 titanium, the VESPER measures 8 inches long and weighs less than 10 ounces. It uses an internal design TENET calls phase shift technology, which works on a principle similar to noise-cancelling headphones. In the video, it was described as the quietest suppressor the host had ever tested.

SHOP VESPER

Two Calibers: VESPER 30 and VESPER 6.5

The VESPER is available in two versions: the VESPER 30 for .30-caliber rifles and the VESPER 6.5 for 6.5mm cartridges.

The two models weigh approximately 9.7 and 9.9 ounces. Because the suppressors are additively manufactured, individual units may vary by a fraction of an ounce, but both stay under 10 ounces.

Both are 8 inches long. The measured length includes an inset at the rear, so the actual length added past the end of the threads is shorter than the overall measurement.

Designed for Maximum Sound Reduction

The VESPER and the LIMITED 30 are designed for different purposes.

The LIMITED 30 was built around recoil reduction and helping shooters spot their own impacts. It directs gases in a way that reduces recoil and muzzle movement, similar to a competition-style muzzle brake.

The VESPER takes a different approach. Sound reduction is the priority.

The result is a suppressor designed for hunters and precision shooters who want maximum sound reduction without adding significant weight to the end of the rifle.

Phase Shift Technology

The most unusual feature of the VESPER is its internal phase shift technology.

Noise-cancelling headphones work by producing a sound wave that is opposite to the incoming sound. When the two waves meet, they cancel each other out.

The VESPER applies a similar concept mechanically rather than electronically.

Inside the suppressor, channels divert gas and pressure waves and then bring them back together out of phase. According to the video, the waves interact in a way that helps cancel each other out and reduce the resulting sound.

This internal geometry is made possible through additive manufacturing and could not be produced using traditional machining methods.

Three Sections, Three Jobs

The VESPER is built around three internal sections, with each section serving a different purpose in the sound reduction process.

The phase shift technology is located in the middle section, while the front and rear sections handle additional parts of the sound reduction process.

Combined, the three sections create a suppressor that the video describes as both extremely quiet and exceptionally lightweight.

TENET's founder is an engineer who also designed the LIMITED 30, which holds seven patents. According to the video, patents are pending on the VESPER.

Compatible With TENET Muzzle Brakes

Like the LIMITED 30, the VESPER can accept either the single-port or dual-port TENET muzzle brake.

The brake is not as effective on the VESPER as it is on the LIMITED 30. Because the VESPER slows and reduces gas before it exits the suppressor, there is less gas available to work against the brake.

Adding a brake will still provide additional recoil reduction, but the effect is more limited compared with the LIMITED 30 setup.

Direct-Thread 5/8x24 Mounting

The VESPER uses a 5/8x24 direct-thread mount, which is common on many 6.5mm and .30-caliber centerfire rifles.

Rifles with other thread pitches can use an appropriate adapter.

Unlike some suppressors, the VESPER does not use a hub mount. The video explains that direct threading helps maintain precision while also keeping the suppressor as light and compact as possible.

Each additional set of threads introduces the possibility of tolerance stacking. Direct threading helps keep bore alignment tight and minimize runout, which is particularly important for a precision suppressor.

Direct threading also eliminates the additional weight, length, and complexity associated with a separate hub mounting system.

Built for Bolt-Action Rifles

The VESPER is designed specifically as a precision bolt-action suppressor.

It is not a flow-through design and will produce some backpressure. It is not intended for AR-15s, and its grade 5 titanium construction is not intended for full-auto fire.

The VESPER is designed for hunting and precision rifles where sound reduction and low weight are the primary priorities.

Range Testing

In the video, the VESPER was tested on three different rifles:

• A 6.5 rifle with the VESPER 6.5
• A .300 PRC with the VESPER 30 using 212-grain Hornady ammunition
• A .300 Blackout with the VESPER 30 using both supersonic and 220-grain subsonic ammunition

For the 6.5 and .300 PRC, shots were recorded with microphones positioned at the shooter's ear, at a 90-degree angle to the muzzle, and on the ground approximately 10 feet behind the rifle.

The .300 PRC results stood out. The video describes the sound of a full magnum cartridge through an 8-inch, sub-10-ounce suppressor as surprisingly quiet.

With supersonic .300 Blackout, the report was quiet enough that the bullet could be heard splashing into water downrange.

The subsonic .300 Blackout produced an even more dramatic result. For comparison, the host recorded the sound of a hammer falling on its own before firing a subsonic round. He described the resulting shot as quieter than his old Red Ryder BB gun.

The video notes that camera microphones are not designed to accurately capture gunshot sound, so the recordings do not fully represent what the suppressor sounds like in person.

A Note on Decibel Numbers

The testing in the video was performed by ear rather than with a sound meter.

According to the manufacturer, the VESPER reduces the decibel level of the host rifle by approximately 40 dB.

The video also explains why published decibel numbers should be viewed in context. Suppressor sound measurements can change depending on several factors, including:

• Surrounding terrain and reflective surfaces
• Temperature, humidity, and atmospheric conditions
• Ammunition type, lot, bullet weight, and pressure
• Barrel length and the specific rifle

Because of these variables, the same suppressor can produce different readings under different conditions.

The video explains that the most useful comparison between suppressors comes from testing them side by side at the same time and under the same conditions. The host also notes that differences of around 3 dB or less can be difficult for most people to hear.

Maximum Sound Reduction Without the Weight

Larger suppressors may compete with the VESPER in sound reduction, but they typically add considerably more weight.

At 8 inches long and under 10 ounces, the VESPER is designed to provide substantial sound reduction while remaining light enough for a mountain hunting rifle.

For hunters and precision shooters focused on low weight and maximum sound reduction on a bolt-action rifle, the VESPER offers a different approach built around its phase shift technology and additively manufactured titanium construction.

SHOP THE TENET VESPER

Always follow all applicable federal, state, and local laws related to suppressor ownership, use, transport, and hunting.

Read GunsAmerica's blog here: https://gunsamerica.com/digest/tenet-vesper-suppressor-review/