MISSION FIRST TACTICAL E-VOLV FLASH HIDER MUZZLE DEVICE FOR AR-15 Projects gas in the proper directions to keep flash footprint to a minimum. Also channeling a small amount of gas through a port upward to help diminish muzzle climb. The Length and inside texture help keep the flash signature to a minimum for most 5.56/.223 bullet grain weights. Flash less shooting experience. FEATURES For 5.56/.223 caliber Reduces flash significantly with a three-prong curved design Small port hole on top helps direct gas to aid in muzzle climb reduction 416 Stainless Steel Black Nitride Finish Milspec Crush Washer Included -17PH4 Stainless Steel pre-hardened SPECS Weight: 2.528 oz Height: .751” Width: .751” Length: 2.51”