Vortek HW50-PG4 STEEL (7.5fb-10J) Tune Kit

HW50-PG4 STEEL (7.5fb-10J) Tune Kit

TUNE APPLICATION 7.5 Joules/500 ftps 
*NEW* PG4 HW50 (7.5ft/lb10J) Tune Kit
The ADJUSTABLE HELICAL GUIDE
Lowest Power output

CONTENTS IN EACH KIT
Fitting HW50 Air Rifles using OEM piston seal.

Performance:
Lowest Power output
500fps (.17cal)/115 m/s CP7.9g


Contents:
PG4sProGuide3 STEEL drop-in module
High Yield valve wire power spring
Triple guides
Lubrication for metal, plastic and seals 

Installation:
For Consideration when tuning power:
It is the owner's responsibility to ensure legality of their air gun power output.
Vortek's Location of testing is 578 Feet.Above.Sea.Level. (F.A.S.L)
For every 1000ft above or below will be approximately .029 difference in velocity, thus foot pound (Ft/lb, Joules) of shooting energy.
1000 F.A.S.L.x .029 = 29fps approx
Joules= .7475=ft/lb

Easy, do-it-yourself with virtually no pre-load force on assembly. 
Works will all HW trigger arrangements 

OPTIONAL:
NOTE for legal limit: Vortek's VacSEAL26 piston seal is not required for air rifle to work with PG4 installed. However, it will perform slightly higher velocities with higher performance in noise damping.