MagnetoSpeed Tapered Spacer Kit

The MagnetoSpeed Tapered Spacer Kit is a precision accessory designed to optimize chrono alignment on rifles with heavily tapered barrels. This kit addresses a common compatibility challenge: when a barrel features an extreme taper profile, standard MagnetoSpeed mounting may sit too close or misaligned to the muzzle device, compromising velocity readings. The kit includes two spacers—a 0.5-inch unit and a 1-inch unit—that can be deployed individually or stacked together to create a 1.5-inch standoff, allowing shooters to achieve proper bore-to-sensor spacing regardless of barrel geometry.

Accurate chronograph data is critical for load development, ballistic validation, and performance verification. Misalignment between the sensor array and bore centerline introduces angular error that skews velocity output and can cascade into poor ballistic coefficient calculations. The tapered spacer kit eliminates guesswork by providing discrete, stackable offset options. The 0.5-inch and 1-inch spacers are precision-machined to maintain MagnetoSpeed's standard geometry while extending the sensor window away from the muzzle. Users can select the specific standoff distance that matches their barrel's taper angle and muzzle device diameter, ensuring consistent, reliable readings across different rifle builds.

This accessory is essential for operators and precision shooters running custom or precision-ground barrels with aggressive taper profiles—common on competition rifles, precision bolt-action systems, and modern AR-10 platforms. Whether conducting factory ammunition testing, validating hand-loaded ammunition, or fine-tuning a load for a specific thermal condition, the ability to ensure proper chrono alignment directly impacts the quality of ballistic data you record. At 0.05 lbs, the kit adds negligible weight while solving a real field problem that arises when standard spacers prove insufficient.