Kaw Valley Precision Linear Compensator 9mm Caliber Kel-Tec Sub 2000 1/2x28 Threads per Inch Black Small BLK-LINEAR-9MM 1/2X28TPI. The KVP linear comp collects and redirects muzzle gases away from the shooter. This redirection helps reduce the perceived decibels the shooter experiences at his or her ear. By pushing excessive noise and concussion downrange not only will the shooter experience a much softer shooting experience bystanders will also benefit from the redirection of the muzzle gasses. Kaw Valley Precision has been a part of many successful applications of their linear comps and Muzzle Devices in many shooting disciplines including: CQC (close quarters combat) Competitive Shooting Varmint Hunting Law Enforcement and Indoor Ranges to name a few. Specifications for Kaw Valley Precision Linear Compensator: Manufacturer: Kaw Valley Precision Gun Make: AR Platform Gun Model: AR-15 Features of Kaw Valley Precision Linear Compensator No crush washer needed for installation Install with crush washer or other timing device if indexing of wrench flats is desired Package Contents: Kaw Valley Precision Linear Compensator What firearm models does the manufacturer say Kaw Valley Precision Linear Compensator is compatible with? The manufacturer says that Kaw Valley Precision Linear Compensator is compatible with AR-15Kaw Valley Precision BLK-LINEAR-9MM 1/2X28TPI: Linear Compensator 9mm Caliber Kel-Tec Sub 2000 1/2x28 Threads per Inch Black Small