True Precision 9mm Mini Compensator 1/2x28 Copper. 380 barrels with 1/2x28 Threads.Made from USA-sourced solid 316L Stainless Steel bar stock. Designed assembled and machined in the USA. The multi-port design includes three slotted 90-degree ports with a tapered front crown to direct gasses away from the muzzle and reduce felt recoil.The overall length is .787in. Outside diameter at widest: .745in with a taper to .650in at the narrowest (barrel end).Available in our popular PVD and Nitride colors Specifications for True Precision 9mm Mini Compensator: Manufacturer: True Precision Caliber: 9mm Luger Threads per Inch: 1/2x28 Barrel Material: 316L Stainless Steel Features of True Precision 9mm Mini Compensator Tension lock o-ring for hand-tight installation to prevent back off. The multi-port design includes three slotted 90-degree ports with a tapered front crown to direct gases away from the muzzle and reduce felt recoil. Optional use of medium hold thread-locking compound for semi-permanent installation. Package Contents: True Precision 9mm Mini Compensator What firearm models does the manufacturer say True Precision 9mm Mini Compensator is compatible with? The manufacturer suggests that True Precision 9mm Mini Compensator is compatible with UniversalTrue Precision TP-SMICRO-C: 9mm Mini Compensator 1/2x28 Copper