Breek Arms Sentinel Closed Tine Plan B Features The Breek Arms Sentinel Closed Tine Plan B uses a fully shrouded closed-tine design rather than the open tines found on many flash hiders giving it superior flash suppression and a profile that resists snagging on gear or clothing. Built for Plan B and Rearden suppressor mounts as well as pin-and-weld builds the Sentinel delivers rock-solid alignment whether run bare or with a suppressor attached. The closed-tine construction also offers NVG-friendly signature reduction limiting the flash that can wash out night vision devices during low-light shooting. A compact 2.15 inch length keeps the device from adding unnecessary bulk to the muzzle. Machined from steel and finished in a matte black nitride coating the Sentinel is built to withstand the heat and wear of sustained firing without degrading. The 5/8x24 thread pitch matches standard .30 caliber barrel threading making installation straightforward on a wide range of rifles. A peel washer is included to ensure proper timing and alignment of the flash hider s tines relative to the bore. At just 1.80 ounces the Sentinel adds minimal weight to the end of a barrel and it is available for sale at GrabAGun for shooters who want effective flash suppression paired with suppressor-ready mounting. Breek Arms Sentinel Closed Tine Plan B Specifications Manufacturer: Breek Arms Model: Sentinel Closed Tine Plan B Type: Flash Hider Caliber: .30 Caliber Color: Black Finish: Matte Nitride Material: Steel Length: 2.15 Thread Pattern: 5/8x24 Includes: Peel Washer Weight: 1.80 oz Compatible Hosts: Plan B Rearden Available At: GrabAGun