******New, Redesigned PRO-GUIDE4 STEEL weighted tune kit having a STEEL Bodyprovides another level of power performance.
A THICKER, heavier machined Steel outer-guide that brings beam strength IN-LINE quickly dampend shot harmonics with two synthetic internal damping guides. Both near equal length including our NEW machined 1 pc HELICAL GUIDE slip fitted into a high-yield, open-coil spring wire. This design allows use of both end coils for more accurate power output across same product line. As well as providing the user an easier cocking effort at full power output! This kit eingineered for all calibers small and large, old and new. Will not over shoot older warn tolerance of compression tube. ~Very quick, liner firing movement consistent deviations shot after shot. Very EZ installation!