Although designed specifically for use with a bolt action tactical rifle, the TPR-S is usable with any .30 caliber rifle, including the powerful .300 Winchester Magnum cartridge. It delivers exceptional performance on both bolt action and semiautomatic rifles, such as the Knight SR-25. The TPR-S has an unusually quiet sound signature that is indistinguishable from and masked by the bullet flight noise, making it ideal for both urban and rural tactical operations. Metering at 25 dB reduction, this unit uses the Gemtech Frequency Shift baffle design, translating most of the sound energy beyond the range of hearing. Measuring 9.25 inches in length and 1.5 inches in diameter, the TPR-S is the most compact .30 caliber suppressor available in its performance class. The patented Bi-Lock™ quick detach mounting system permits consistent mounting with repeatable accuracy. The barrel portion of the Bi-Lock™ mounts on standard 5/8x24 threads and is torqued into position to assure utmost accuracy. Additional Bi-Lock™ mounts are available in so that the TPR-S suppressor may be used with multiple .30 caliber rifles. A thread mounting version of the TPR-S is available for bolt-action rifles on special order (5/8x24).