The Griffin Armament GPM Ceramic Ball Level, model SMBL, is a precision accessory designed to eliminate rifle cant and enhance shooting accuracy. Constructed from aircraft-grade aluminum and featuring custom glass levels, this ceramic ball level achieves precise resolution of less than 1° with line increments of 2.5°. It allows shooters to consistently eliminate windage point of impact error, especially at long ranges. The ceramic ball level is compatible with the Accuracy 1st Anti-Cant scope level light, providing visibility in low light conditions. This accessory must be mounted on the left upper 45-degree surface of the GPM mount ring and is intended for right-handed shooters.