Thunder Beast Arms "TBAC" 338 Ultra Gen 2 SR

The second-generation 338 ULTRA ("Gen2") superseded the original model January 2022. The Gen2 is quieter than the original version by about 3 dB. Gen2 338 Ultras can be identified by serial numbers that are higher than E10000.

The new 338 ULTRA is the quietest .338 caliber suppressor on the market today for everything up to .338 Lapua Magnum, including your 6's, 6.5's, 7's, and .30's. It offers class leading suppression levels with extreme light weight.

The 338 ULTRA is available in two versions:

(1) The 338 ULTRA has the original TBAC large Brake Attach (BA) brake attachment, the same mount as the original 338 ULTRA, and older 30BA series. This design is backwards compatible with all 338BA and 30BA brakes. It can be used on our smaller CB brake mounts with the addition of a CB2BA adapter.

(2) The 338 ULTRA SR has the same SR (Secondary Retention) mount as our Dominus-SR, Dominus-K-SR, and Magnus-SR. This model is 0.60-inch longer and 2.8 ounces heavier than the BA version. This version has the same Hard-Use/Full-Auto as the DOMINUS-SR, ie, Lifetime to exceed at least 10 SURGE cycles on a 10.5" M4 / MK18. The BA version of the 338 ULTRA is NOT full-auto rated due to the mount being insufficient. The GEN2 SR weight is 0.2 ounces lighter than the GEN1 version.

The 338 ULTRA Gen2 will suppress as follows on most hosts:
6.5 Creedmoor
  124.6 dB muzzle, 110.3 shooter's ear
  24" AI-AX, Hornady 140 ELDM

.308 Win
  124.8 dB muzzle, 114.2 shooter's ear
  20" AI-AX, M118LR

.300 Norma Magnum
  133.6 dB muzzle, 121.4 shooter's ear
  26" AI-AXMC-LE, Berger 230

.338 Lapua Magnum
  134.6 dB muzzle, 121.3 shooter's ear
  27" AI-AXMC-LE, Lapua 300