Area 419 Sidewinder Magnum Features The Area 419 Sidewinder Magnum uses the same patent pending self timing technology as the smaller Hellfire brake scaled up to handle any 6.5mm bullet caliber up to and including .264. Each brake ships with one universal adapter that is torqued onto the barrel once with a 13/16 inch wrench and never needs to come off again. The brake and collar assembly then threads onto the adapter left hand locking into place without turning as the shooter tightens the collar which removes the guesswork of lining up ports during installation. A simple round knurled nut allows the brake to be timed without any additional tools. Because the brake locks onto a tapered adapter interface rather than relying on shims or crush washers Area 419 reports excellent return to zero performance meaning the brake can be removed and reinstalled without shifting point of impact. Finished in raw stainless steel and cut to a 5/8x24 thread pitch the Sidewinder Magnum measures 5.60 inches overall to accommodate its larger port design. This brake is intended for magnum caliber shooters who want the recoil management of the Hellfire system scaled up for harder recoiling cartridges. The Sidewinder Magnum is a strong option for anyone building a dedicated 6.5mm magnum precision rifle. Area 419 Sidewinder Magnum Specifications Manufacturer: Area 419 Model: Sidewinder Magnum Caliber: 6.5mm Color: Raw Stainless Material: Steel Length: 5.60 Thread Pattern: 5/8x24 Available At: GrabAGun