High-Performance Magnum Suppressor

Let's cut to the chase-- The MAGNUS is the quietest .30 cal suppressor on the market for everything -- .223's, 6mm's, 6.5mm's, 7mm's, and .30's -- up to .300 Norma Magnum. The only thing quieter is a 338 ULTRA GEN2, which is larger.

The MAGNUS is available in three versions: CB, SR, and HUB.

(1) The MAGNUS-CB shares the same CB series mounts as our Ultra 5, 7, and 9 series, and the Dominus-CB.

(2) The MAGNUS-SR shares the same SR (Secondary Retention) mount as our Dominus-SR, Dominus-K-SR, and 338 ULTRA SR. This model is 0.70-inch longer and 2.9 ounces heavier than the CB 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 other versions of the MAGNUS are NOT full-auto rated due to the mount being insufficient.

(3) The MAGNUS-HUB comes with the common "HUB" (1.375"x24 tpi) rear end. This allows the flexiblity to use whatever mount system you want.

The MAGNUS will suppress as follows on most hosts:
6.5 Creedmoor
  126.6 dB muzzle, 111.9 shooter's ear
  24" AI-AX, Hornady 140 ELDM

.308 Win
  126.7 dB muzzle, 113.7 shooter's ear
  20" AI-AXMC-LE, M118LR

.300 Norma Magnum
  135.1 dB muzzle, 122.1 shooter's ear
  26" AI-AXMC-LE, Berger 230

The MAGNUS simply beats every other .30 caliber suppressor on the market today for total, raw, suppression.

The SR Mount System

This video explains the SR mount system and its applications on a precision rifle suppressor

This mount meets the mil spec represented in the 2017 Advanced Sniper Rifle (ASR) solicitication, and the 338 ULTRA SR is the suppressor that Accuracy International North America chose for their ASR rifle system submission.

The main feature of the SR mount is that it acts as a secondary, fail-safe, locking mechanism to retain the suppressor on the muzzle brake in all circumstances, unless explicitly removed on purpose, by hand. It also reduces the number of turns required to mount the suppressor due to a coarser thread and enables "Quick Mount" and "Quick Detach" functionality of the mount. The mount is mechanically very simple and user-level maintenance is possible.


The SR mount uses a novel paw and cam-path system to ensure that "full lock up" can happen in either of the two adjacent detent slots for any given final shouldering position of the suppressor on the conical brake shoulder. This categorically avoids the "off by one" problem that many "clicky" mounts have. The SR mount has the exact same accuracy, repeatability, and return-to-zero characteristics that all our precision suppressors are known for.

This mounting system is covered by US Patent 9,791,234.

Link to the SR mount Operator and Armorer-level instruction manual.

Special Features

Ionbond DLC coating on CB and SR series brakes
Conical shoulder surface on mount (CB and SR version)
100% titanium construction of suppressor body
360-degree fully-welded baffle core
Magnum rated
Rock-Solid POI Repeatability
Patented SR brake with full lockup in at least two positions


"At the muzzle" (M) sound measurements are measured in accordance with MIL-STD-1474D using a B&K PULSE SLM one meter offset from muzzle of the suppressor. These are also referred to a "milspec-left" (ML) and "milspec-right" (MR)

"At Shooter's Ear" (SE) measurements are measured in accordance with MIL-STD-1474D using a B&K PULSE SLM at the position of the shooter's right ear in a normal shooting position. SE measurements are affected by overall rifle length.

To isolate the muzzle suppression from the supersonic crack (the "shockwave"), the shockwave pulse is omitted from peak measurements. Please refer to this video for more information: Thunder Beast education video #1. Sonic Crack. Per the video the supersonic crack presents an extremely short impulse in centerfire rifles that is 130-134 dB measured at the ML/MR and presents approximately 120-124 dB at SE (exact number varies based on caliber). For additional information on shockwave, please excerpts from the NATO document here.

Bolt action rifles will always be quieter than semi-autos due to the "port pop", IE, gas pressure escaping through the action. On AR-10/AR-15 "gas gun" platforms, this port pop will almost always dominate the Shooter's Ear (Se) dB number. The port pop of a gas gun can often be reduced substantially by tuning the gas system.

For centerfire semi-auto pistols, the sound pressure that escapes the breech is considerable and, due to shorter barrel lengths, influences both muzzle dB and shooter's ear dB numbers.


Caliber .30 caliber, up to .300 Norma Magnum
Material Titanium
Length 9.0 inches (CB, HUB)
9.7 inches (SR)
Diameter 1.8 inches (suppressor body); 1.85 inches (rear collar)
Weight 14.8 ounces (CB)
14.7 ounces (HUB)
17.7 ounces (SR)
Mount CB, SR, or HUB
Brake Threads 9/16-24, 5/8-24, 3/4-20, 3/4-24, 3/4-28, M15x1.0, M18x1.0, M18x1.5
Finish High-Temp CeraKote: Black, OD Green, FDE, Federal "20150" (ie, SURG Brown)
Use Precision/Long-range on big-bore magnums
Hard-Use/Full-Auto (SR variant)
Price $1610 (CB) - one CB brake included.
$1610 (HUB) - no mount included
$1930 (SR) - one SR brake included.
Warranty TBAC Limited Lifetime Warranty
How to order a suppressor


SR Brake
Each brake includes one peel washer

30CB Brake
Each brake includes one peel washer

30CB Flash Hider
Each flash hider includes one peel washer

30CB External Thread Protector

Extra Peel Washers
Peel washers have an O.D. of 0.840-0.845"
and an initial thickness of approx 0.048-0.055".
Shipping for web orders is $8.65 for the first item and $4.33 for each subsequent item, for most products. Shipping cost on external thread protectors and extra peel washers is less. Bipods are more.


NOTE: The collar is not intended to stay perfectly parallel/square to the body when locked. The play is there on purpose for clearance so foreign material does not compromise functionality of the locking mechanism.


5.5" .300 Blackout (Full power and Subs), 6.8 SPC, 7.62x39,
8" .308, 6.5 Creedmoor, .260 Rem, 6 Creedmoor, .243 Win, .22 Creedmoor, .223/556 (SEMI AUTO)
10.3" .223/556 (FULL AUTO per Dominus-SR schedule)
12" 26 Nosler, 6.5 SAUM, 6.5 PRC, 7 WSM, 7 SAUM, 7 STW, 7 RM, 300 WSM
14.5" 300 PRC, 300 RUM, 7 RUM, 300 WM, 300 WBY, 6.5-300 WBY
16" 300 NORMA, 28 Nosler
For questions about a particular rifle/load combination please contact us.


On the MAGNUS and 338 ULTRA, we recommend weighing them every 500 rounds. At this point, if the weight added due to deposited carbon exceeds 1 ounce, we recommend using our cleaning procedure until the suppressor is back to its orginal weight. Link to TBAC recommended cleaning procedures.

The GEN2 338 ULTRA and MAGNUS suppressors work by trapping and holding gas which means they gain carbon faster than the GEN1.


The HUB interface version of this suppressor is meant for advanced users who are familiar with HUB-compatible mounts and know how to use their choice of HUB mounting system in a secure, reliable, and repeatable manner. If you get the HUB version, you should know what you're doing. Everything behind the suppressor body is your responsibility.

We are not responsible for damage caused to this suppressor by another manufacturer's HUB mount system, through its use, misuse, incompatibilities, or any other reason related to the mounting system.

For our part, we will guarantee that the HUB interface is correct and the suppressor will have acceptably-low runout when mounted on a TBAC reference HUB/DT interface.

For the Ultra 5, 7, and 9, the HUB versions have a slightly larger outer diameter (OD) at the rear of the suppressor to accomodate the 1.375" internal threads, compared to the normal CB versions. For the Magnus and the Dominus, the stepped-down section at the rear of the suppressor is slightly larger OD compared to the CB version (but smaller than the SR version).


Follow the Youtube link for the dB data breakout on any of these.