Kak Industry Micro "Slimline Flash Can" The Bore Will Allow A 9Mm To Pass Through Similar To The Standard "Flash Can" But Shorter And Smaller Diameter To Fit Inside Slim Rail Systems You Guys Asked For It So Here It Is This Is A Solid 6061 Aluminum Device That Is Designed To Direct Muzzle Gases And The Muzzle Flash Forward Threaded 1/2-28 For 5.56 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 A Crush Washer Can Be Used Is Specific Timing Is Desired This Device Can Withstand Full Auto Hard Use, No Back Pressure Is Created So Gas Cutting Is Not A Problem Many End Users Have Reported Thousands Of Rounds Downrange With No Change Or Erosion 1.200 Dia 1.75 Long 6061 Aluminum Black Hard Anodized Finish 1.7 Oz. 3/4 Wrench Flats This Muzzle Device Will Fit Inside Utg Pro, Aero Cop And Other Rails That Will Not Clear The Original Larger Version Specifications for KAK Micro 1/2-28 Slimline Flash Can: Manufacturer: KAK Industry Threads per Inch: 1/2x28 Caliber: 5.56x45mm NATO Weight: 1.7 oz Condition: New Fabric/Material: 6061 Aluminum Package Contents: KAK Micro 1/2-28 Slimline Flash Can