MagnetoSpeed Barrel Spacer Kit for Extreme Tapered Barrels

The MagnetoSpeed Barrel Spacer Kit is a purpose-built accessory designed to properly align your MagnetoSpeed barrel-mount ballistic chronograph on rifles with an extreme barrel taper. Standard mounting can leave the sensor bay sitting at an angle on heavily tapered profiles, which throws off shot detection and velocity readings. This kit solves that without any permanent modification to your chronograph.

The set includes a 0.5 degree spacer and a 1 degree spacer. Each piece installs individually, or the two can be stacked together to create a 1.5 degree combined spacer, giving you three correction options in one compact package. That range covers everything from a mild target taper to an aggressive heavy-barrel profile, so you can dial in the right angle for your specific rifle. The spacers are molded from a tough, lightweight polymer and drop directly into the existing MagnetoSpeed mount for a quick, tool-free fit.

If you run a MagnetoSpeed barrel-mount chronograph on a rifle with an aggressively tapered barrel, whether a heavy bull barrel, a fast-stepping target profile, or any other setup where the barrel tapers quickly from chamber to muzzle, this tapered spacer kit is a simple, effective way to keep the sensor bay square. The result is cleaner velocity data, more reliable shot detection, and more confidence in your load development at the range.