The MagnetoSpeed V3 ballistic chronograph kit was designed to be used on barrels and suppressors from 1/2 inch all the way up to 2 inches in diameter. In addition to the larger diameter tolerance, the V3 also has one inch more clearance in the blast zone to account for longer (up to 3.5" in most cases) muzzle brakes, flash hiders, etc.
The long awaited ballistic radar for consumer use is finally here. Labradar performance exceeds any consumer level velocity acquisition system. It continually measures velocities of your rifle, pistol, shotgun (slugs), arrows or pellets up to 100 yards depending upon the size of the bullet. Smaller bullets do not track as far as large bullets. Multiple distances for velocity display are user definable on the unit. LabRadar measures velocities up to 3,900 f.p.s. with 0.1% accuracy using six AA batteries.