The MagnetoSpeed V3 Ballistic Chronograph Kit was designed to be used on barrels and suppressors from .5 to 2 inches in diameter. In addition to the larger diameter tolerance, the V3 also has 1 inch more clearance in the blast zone to account for longer (up to 3 inches in most cases) muzzle brakes, flash hiders, etc. It has an improved design and is equipped with the following features: improved display, three-button menu system, easy access battery compartment, improved shooting modes, advanced data logging and troubleshooting capabilities, a compact and rugged display housing and much more. The kit comes with a retractable connection cable, stainless-steel blast shield, rubber V-block spacers, microSD card with adapter, bayonet sensor, polymer spacer kit, heavy-duty strap, alignment rod and a hard case with custom cut foam. MSRP: $449. Contact: kestrelballistics.com