***New, 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.
CONTENTS IN EACH KIT
Fitting HW55L Air Rifle 
Performance:
High Yeild smoothTarget Performance
660+fps(.17cal)/205 m/s CP7.9g
Product Code:
PG3-HW55_730113-23Hth
Contents:
- PG4 ProGuide3 drop-in module 
- VacSEAL-25mm Adapter seal replacement kit 
- High Yield valve wire power spring 
- Triple guides 
- Lubrication for metal, plastic and seals  
 Installation:
- For Consideration when tuning power:
 It is the owners responsibility to assure 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.
 
- OPTIONAL:
 NOTE for legal limit: Vortek’s VacSEAL25 piston seal is not required for a leather-seal air rifle to work with PG3 installed. However, it will perform higher velocities, approx. 15-30fps higher performance in noise damping.