Thunder Beast 338 Ultra Suppressor


The 338 ULTRA is Thunder Beast’s latest high-performance .338 caliber suppressor.  It offers class leading suppression levels with extreme light weight.  The 338 ULTRA will suppress a typical .338 Lapua Magnum bolt-action rifle down to approx 135-138 dB.  It also has very little or no “first round pop” (FRP) in most applications and weighs just 16.9 ounces.  The 338 ULTRA is backwards compatible with all 338BA brakes.  With the introduction of the 338 ULTRA, there have made several changes to the 338BA brake to follow the functional and cosmetic design of the “CB” brake.


The ULTRA series represents a revolutionary improvement in titanium precision rifle suppressors. Thunder Beast took everything they learned over the last half decade building the best precision rifle suppressors in the world and put it into the ULTRA design. The ULTRA series offers unprecedented light weight and class-leading suppression levels.  Compared to the prior 338BA, the 338 ULTRA is 33% lighter, 2-4 dB quieter, and much stronger.  The 338 ULTRA holds the same precision and repeat-ability as the rest of Thunder Beast’s precision suppressor lineup.

The ULTRA series is constructed of titanium with a fully-welded core. This material and construction provide a great strength to weight ratio. It can take whatever your precision rifle can dish out.  The ULTRA baffle stack was completely redesigned, but retains the principles that made the 30P-1 and 338BA stacks such great precision and long-range suppressors. Thunder Beast suppressors have racked up impressive results at long-range field shooting events nationwide, and have been the most popular suppressor used in the Precision Rifle Series (top 50 competitors) for three years running.  Many long-range shooters prefer shooting suppressed because the muzzle blast and concussion is eliminated, while the recoil impulse is reduced and smoothed out over time. The net result is that the rifle is easier to shoot and it’s easier to make hits. Communication with your spotter is easier because the need for hearing protection is reduced.  The 338 ULTRA was designed around .338 Lapua Magnum for maximum flexibility and is rated with that cartridge down to 16″ barrels.  The 338 ULTRA can easily do multiple-rifle duty on 6mm’s, 6.5’s, .260’s, .308, and most .30 caliber magnums.


  • Ionbond DLC coating on 338BA brakes
  • Conical shoulder surface on mount
  • 100% titanium construction
  • 360-degree fully-welded baffle core
  • Helical Baffle Technology
  • Magnum rated
  • Rock-Solid POI Repeat-ability

Minimum barrel lengths:

  •    .300 Blackout: 8″
  •    6.8 SPC, 7.62×39: 10″
  •    .223 Rem, 5.56, 6.5 Grendel: 11.5″
  •    .308 Win: 14.5″
  •    7mm RM, .300 WIN MAG: 18″
  •    7mm RUM, .300 RUM: 20″
  •    .338 Lapua Magnum: 16″
SKU: 5938 Categories: ,


Additional Information
Model338 Ultra
TypeRifle Suppressor
Weight16.9 oz
LengthLength: 10.4″  (1.8″ Diameter)
FinishBlack, OD Green & FDE
MountCompact Brake Mount
Sound Rating135 dB (.338)
Product UPCT16340UHP

Additional Information Content

Additional information


Black, FDE, Olive Drab Green

Modern Warriors

We started Modern Warriors for the sole purpose of providing a less expensive way to enjoy our love of buying and shooting some really cool stuff. What started as a hobby has turned into a business where we have developed the experience and ability to help you enjoy our same hobby and save you money in the process.

We specialize in tactical weapons, including suppressors, short barrel rifles and full auto weapons. We have routine experience in shooting the weapons we carry, so if you want our opinion on how a weapon operates, we will gladly provide it. We also have expertise working with licensed professionals in setting up gun trusts, which is an ideal way of purchasing, owning and operating any weapon restricted by the National Firearm Act. Don’t let the word “trust” scare you. It is very easy to set one up if you have the right help.

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