The KVP MACH Modular Linear Comp is a Patent Pending linear compensator system that is completely user configurable! If you've struggled to find a comp the correct length for the perfect "tuck," configure ytheir own! By utilizing 1-1/8x28 TPI internal threads, the MACH Modular Linear Comp can utilize common suppressor attachments, such as a SilencerCo 3-Lug Mount, SilencerCo Direct thread mounts, etc. KVP has opened up a level of modularity that has never before been offered in the Linear Comp market. The Mach Comps allow end users to run any length comp they want, including extra long configurations acting as a placeholder for a suppressor awaiting a Form 4 approval. Each component is machined from 6061-T651 Aluminum and hard coat anodized for wear protection. The MACH system utilizes a 1-1/4 hexagonal wrench flat configuration for easy installation with a standard open end or adjustable wrench. For permanent configurations of a MACH Modular Linear Comp, Red Locktite (or similar) thread locker should be considered. If future re-configure of the comp is desired, anti-seize on the mating threads is recommended. Specifications for Kaw Valley Precision MACH 3 Modular Linear Compensator Body: Manufacturer: Kaw Valley Precision Color: Black Caliber: .223 Caliber Cartridge: .350 Legend, .300 AAC Blackout, .45 ACP Finish: Hard Coat Anodized Fabric/Material: 6061-T651 aluminum Outer Diameter: 1.28 in Length: 3.35 in Weight: 1.9 oz Condition: New Package Contents: Kaw Valley Precision MACH 3 Modular Linear Compensator Body (1) 1in Coupler (2) 1in Spacers (1) Standard End Cap