TBAC SR NTB

TBAC SR NTB

THE TBAC SR NTB (NON-TIMED-BRAKE) IS A VERSION OF THE SR BRAKE THAT DOES NOT REQUIRE TIMING AND IS IDEAL WHEN THE SHOOTER WILL ALMOST ALWAYS BE SHOOTING SUPPRESSED. THE BRAKE PERFORMANCE OF THE NTB WHEN THE SUPPRESSOR IS NOT BEING USED IS REDUCED VS. THE NORMAL SR BRAKE DUE TO ITS SMALLER PORTS. IT HAS PORTS IN 3 OF ITS 6 SIDES.

• IONBOND
• DLC FINISH (MONOCOLOR DARK GRAY)

* NOTE: 1/2-28 THREADS ARE NOT AVAILABLE FOR LARGER THAN .223 CALIBER BORES BECAUSE THE ROOT DIAMETER OF THE THREADS LEAVES TOO LITTLE WALL THICKNESS.

The SR Mount System

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

The Extra SR NTB Mount meets the mil spec represented in the 2017 Advanced Sniper Rifle (ASR) solicitation, 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.

HOW OUR SR MOUNT IS DIFFERENT

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.