***New, Redesigned PRO-GUIDE4s 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 INTERNAL HELICAL GUIDE Guide + an HELICAL GUIDE Seat' 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 HW80 and R1 air rifles. Will not over shoot older warn tolerance of compression tube. We also offer custom mfg spring coil count, more or less power output at no addition cost. ~Very quick, liner firing movement consistent deviations shot after shot. EZ installation!