SLR Synergy 30 Cal Linear Hybrid Compensator 5/8x24 Thread Black. 308/300BLK. Stainelss Melonite Core with Titanium Sleeve. Adds 1.52 inches to barrel. 5/8x24 Threading. 1.25 inch Outer Diameter. 2 inch Overall Length. 4.5 oz. Included Accessories: Crush Washer Specifications for SLR Synergy 30 Cal Linear Hybrid Compensator 5/8x24 Thread: Manufacturer: SLR Color: Blasted (Grey) Projectile Caliber: .30 Caliber Finish: Melonite Fabric/Material: Stainelss Threads per Inch: 5/8x24 Length: 2 in Weight: 3.8 oz Included Accessories: Crush Washer Diameter: 1.25 in Features of SLR Synergy 30 Cal Linear Hybrid Compensator 5/8x24 Thread: Synergy Linear Hybrid Compensator 30 Cal. 308/300BLK. Stainelss Melonite Core with Titanium Sleeve. Adds 1.52 inches to barrel. 5/8x24 Threading. 1.25 inch Outer Diameter. 2 inch Overall Length. 4.5 oz. Included Accessories: Crush Washer Package Contents: SLR Synergy 30 Cal Linear Hybrid Compensator 5/8x24 Thread SLR MD-30-24-LINEAR: Synergy 30 Cal Linear Hybrid Compensator 5/8x24 Thread Black