Length: 1.8125 - Diameter: .75 - Material: 4140 Steel - Finish: Black Phosphate - Thread Size: sRx - Introducing the YHM® sRx Short Flash Hider! - YHM’s new line of sRx products were designed with aesthetics and ease-of-use as the top priorities and that is no different for the YHM ® sRx Short Flash Hider (YHM-4445’s). This Q.D Flash Hider comes in three variations (5/8 x 24 5/8 x 32 & 11/16 x 24) and it’s compatible Q.D. Adapter/Mounting Interface attaches to the industry standard (HUB) 1-3/8 x 24 threads. It features an internal taper seal-in front of the threads-that locks your suppressor on and forms a tight seal to contain gasses while in-use. This means no gasses or debris can build up on the threads. - The sRx Short Flash Hider must be paired with The YHM sRx Adapter (YHM-4400). - The sRx Short Flash Hider adds minimal length and weight to the suppressor set up while also allowing you to reap all the benefits of the new YHM® sRx System-when used in conjunction with The sRx Adapter. The full YHM® sRx (Suppressor Rx) System will be the obvious choice for someone looking for a sleek low-profile suppressor set up-that’s also built to withstand rigorous use. This is our prescription for the shooter who cares about the aesthetics of their build as well as its ease-of-use. - Some of the exciting new benefits of the YHM® sRx System are as follows: - TIMELESS. (No need to shim/time to barrel) - Small/low profile - No moving parts - Large taper in front of the threads allows for consistent mounting. - Lighter than many Q.D. mounting offerings on the market - Can be permanently attached to firearm barrel needed