KAK 1/2-36 Flash Can 9mm. This Is A Solid 6061 Aluminum Device That Is Designed To Direct Muzzle Gases And The Muzzle Flash Forward. Threaded 1/2-36 For 9Mm Or Similar Weapons. Black Military Type Hard Anodizing. This Device Is Not Designed To Reduce Recoil Muzzle Rise Or Flash Signature. This Device Is Designed To Direct Gasses And Noise Forward Away From The Shooter And Enhance The Weapons Appearance.. 1.360 Dia 3.250 Long 6061 Aluminum Black Hard Anodized Finish 4.14 Oz. 3/4 Wrench Flats Specifications for KAK 1/2-36 Flash Can: Manufacturer: KAK Industry Threads per Inch: 1/2x36 Caliber: 9mm Luger Weight: 4.14 oz Condition: New Fabric/Material: 6061 Aluminum Package Contents: KAK 1/2-36 Flash Can KAK AR15-UP-360: 1/2-36 Flash Can 9mm