Magnetospeed V3 Chronograph

Magnetospeed V3 new in the box. Barrel-mounted ballistic chronograph that measures muzzle velocity using electromagnetic sensors. It works in all lighting conditions, fits all barrel profiles, and clears muzzle brakes up to 3 inches long.  Supper easy to put on your barrel and shoot. No messing around with tripods. $250 plus shipping Firm. Trades considered: 22lr rifles, 6.5CM & 308 win brass and projectiles.