TAC41 variable mass piston (VMP)

Silverback comes with the option of tuning the so-called Joule Creep by weight. 

You can adjust the weight of the piston depending on the configuration of your rifle and achieve maximum replica potential for your chosen ammunition weight, barrel diameter and barrel length.

Another indisputable advantage is better consistency of shooting, while the slower running of a heavier piston also allows for better dampening and more refined replica shooting.

Adjustment is made by combining different weights on the piston body and two different weight materials, heavy steel and light aluminum.

The range of weights can be adjusted from 40 to 137 g.

Included in the package is a link to a spreadsheet directly from the manufacturer, where you can insert the measured data and get a detailed graph from which you can easily determine the ideal Joule Creep see the manufacturer's video.

Package contents:

NBR piston head
Piston head made of CNC AL 6061 T6
Piston body in CNC AL 6061 T6
CNC steel piston retainer for TAC 41
CNC aluminium weights (4 pieces)
CNC steel weights (4 pieces)
PTFE lubricant
Tools