Ruger Air Hawk-PG4 STEEL Kit

TUNE APPLICATION:
*NEW* PG4 Ruger Black~Air Hawk Tune Kit
The ADJUSTABLE HELICAL GUIDE
High Output (HO)

The redesigned PRO-GUIDE4! Machined pitch into guide arrangement. HELICAL GUIDE FITTING with open coils, allowing use of all coils for more accurate output across product line.  The new PG4-Guides have a near fit to its power grid with thicker guides, less spring equaling less fatigue, better sound deadening. Liner firing movement consistent deviations shot after shot.

Performance:
High-Output full power up to 15ft/lbs/22 Joules,
1000fps(.17cal)/240 m/s CP7.9g
690fps(.22cal)/200 m/s G14.3g

Product Code:
PG4-780125-28Hth

Contents:
PG4 ProGuide3 drop-in module
High Yield valve wire power spring
4X guides
Breech Seal (fitting Diana models)
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 Diana/RWS trigger arrangements T01 through T06 models

OPTIONAL:
NOTE for legal limit: Vortek’s Pro-SEAL28 piston seal is not required for air rifle to work with PG4 installed. However, it may perform higher velocities with higher performance in noise damping.