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The Stalker Scorpion TAC-41 Piston!

After designing the Stalker Scorpion SRS and Scorpion VSR editions it was now time for the TAC-41 edition.

The Stalker Scorpion piston has an extremely modular design which was made from scratch on my drawing table a long time ago. It has all the options people could want for their piston. It is a unique concept where 6 weights form the body itself, and as the piston itself is made up of these weights, it is also possible to extend the piston with additional weights (short-stroke/shortpull) which in turn reduces the volume of your cylinder and joule output but benefits from a short pull and shorter piston travel.

Ultimate Part List :
1x Aluminum Piston Head
5x Aluminum Center Weights
1x Steel Piston Head
4x Steel Gold Weights
1x Piston Cup 
1x Brass Airbrake
1x Nut for Airbrake
1x STALKER engraved Spring Guide
1x Front Guide Ring
1x Rear Guide Ring (color- Rainbow Treatment -)
1x Sear End
1x O ring kit

The 6 piece setup allows for 12 different setups, by extending the piston with an additional weight it allows you to choose from 12 additional setups to choose from.

Here's a list for the 6 piece setups:

TAC41 Scorpion 61g (1x head alu, 5x mid section alu)
TAC41 Scorpion 74g (1x head alu, 1x mid section steel , 4x mid section alu)
TAC41 Scorpion 78g (1x head steel, 5x mid section alu)
TAC41 Scorpion 87g (1x head alu, 2x mid section steel , 3x mid section alu)
TAC41 Scorpion 91g (1x head steel, 1x mid section steel , 4x mid section alu)
TAC41 Scorpion 99g (1x head alu, 3x mid section steel , 2x mid section alu)
TAC41 Scorpion 105g (1x head steel, 2x mid section steel , 3x mid section alu)
TAC41 Scorpion 113g (1x head alu, 4x mid section steel , 1x mid section alu)
TAC41 Scorpion 116g (1x head steel, 3x mid section steel , 2x mid section alu)
TAC41 Scorpion 126g (1x head alu, 5x mid section steel)
TAC41 Scorpion 130g (1x head steel, 4x mid section steel , 1x mid section alu)
TAC41 Scorpion 144g (1x head steel, 5x mid section steel)(Needs 1 extra gold weight, sold separately)

I’ll explain the features of this piston for you below.

The cup is made of durable high quality rubber and have been tested and adapted to have the best performance with the currently stock cylinder of Silverback.

Black Cup

Lube piston cup with oil such as Motor oil, Sewing machine oil, or grease like TechT before use.

  • Zero loading friction.
  • Thumb Block Air Seal
  • Best Joule Output.
  • Fast Reloading (Lightest pull).
  • Fits SRS Scorpion as well

The piston comes with several body weights (depending on the product edition) that are interchangeable with each other to perfectly set up your SRS.

Next to that, the piston head is available in these versions as well.

  • Aluminum anodized black, each head weighs: 8 Grams
  • Coated gold, polished steel, each head weighs: 24 Grams

This way you can configure the piston between ~61 to 144 grams, This way you can set it up for any kind of joule output(You need to get an extra gold weight to get to 150grams). This kit comes to 130 grams.

Next to that, the piston comes with one adjustable airbrake.

1x Adjustable Airbrake made of Brass. (O-ring optional)

This is a non-tapered, fat, brass airbrake. This airbrake is the most "direct" working airbrake, once the airbrake enters the nozzle the piston immediately starts to slow down.

The airbrake is held with a nut underneath the cup against the piston head to keep it in place after you have adjusted it to your liking.

The adjustable airbrake is there to adjust the piston’s speed at the very end of its movement to reduce the time of air escaping from the cylinder and to reduce some piston impact noise when it hits the cylinder head.

The size of the entrance of the Scorpion piston has been optimized to work best with APS2 style springs such as Rapax and Silverback springs it might work just fine with other brand springs as long as these springs have the same diameter as the springs mentioned above(APS2 style).

Basically, if you like a plug and play piston or if you are a master of tinkering with your piston weights, airbrake, and cups to get the best performance, then the Stalker Scorpion is your best friend.

If you have any issues or questions about this or other Stalker Products, please visit our Stalker Owners Group on Facebook here: