Thunder Beast 338 Ultra SR Gen 2 Suppressor - Secondary Retention Brake

Thunder Beast 338 Ultra SR Gen 2 Suppressor - Secondary Retention Brake

Meet the Thunder Beast Arms Corp 338 ULTRA Gen2 Suppressor—the quietest .338 caliber suppressor on the market, purpose-built for precision shooters and long-range hunters who demand uncompromising performance. Redesigned in January 2022, the Gen2 delivers a 3 dB reduction in sound compared to the original, while maintaining extreme lightweight construction and unmatched durability.

Crafted from 100% titanium with a tubeless, fully welded baffle stack, the 338 ULTRA Gen2 offers class-leading suppression, rock-solid point-of-impact repeatability, and magnum-rated strength. Whether mounted on a .338 Lapua Magnum or adapted for 6mm, 6.5mm, 7mm, and .30 caliber rifles, this suppressor provides versatility across platforms.

The SR (Secondary Retention) mount system, covered by US Patent 9,791,234, ensures fail-safe lockup, quick attach/detach functionality, and military-grade reliability. Trusted by Accuracy International North America for their ASR rifle system submission, the 338 ULTRA SR is engineered for hard-use, full-auto duty cycles while maintaining precision accuracy.

Quieter Performance
Gen2 design reduces sound by ~3 dB compared to the original model.

SR Mount System
Fail-safe locking mechanism with quick attach/detach functionality, ensuring secure retention.

Full-Auto Rated (SR Variant)
Built to withstand at least 10 SURGE cycles on a 10.5" M4/MK18.

Tubeless Titanium Construction
Lightweight, fully welded design with superior strength-to-weight ratio.

Helical Baffle Technology
Redesigned stack delivers class-leading suppression and consistent accuracy.

Magnum Rated
Handles .338 Lapua Magnum down to 16" barrels, plus multiple smaller calibers.

Ionbond DLC Coating
Enhanced durability and corrosion resistance on brakes.

Specifications

• Caliber: .338 caliber, up to .338 Lapua Magnum or .338 RUM
• Material: Titanium
• Diameter: Body 1.8 inches; Collar 1.85 inches
• Mount: SR brake
• Brake Threads: 5/8-24
• Brake Material: Heat-treated 17-4 stainless
• Brake Finish: Ionbond DLC
• Suppressor Finish: Black CeraKote
• Use: Hard-Use/Full-Auto
• Minimum Barrel Lengths:
  • 5.5" – .300 Blackout, 6.8 SPC, 7.62x39
  • 8" – .308, 6.5 Creedmoor, .260 Rem, .243 Win, .223/556 (semi-auto)
  • 10.3" – .223/556 (full-auto per Dominus-SR schedule)
  • 12" – 26 Nosler, 6.5 SAUM, 7 RM, 300 WSM
  • 14.5" – 300 PRC, 300 WM, 7 RUM, 6.5-300 WBY
  • 16" – 300 NORMA, 28 Nosler, 338 Lapua, 338 Norma