Scorpion Piston - SSG10 + Spring Guide

The new Stalker Scorpion piston kit for the SSG10!

Key Features:

• Modular piston with adjustable weight (from ~65 to 148 grams)
• Reduces noise on your SSG10
• Increases consistency in joules/FPS
• Adjustable airbrakes with dual O-ring grooves for fine-tuning and optimal performance
• Short-stroke option for faster reloads (at the cost of some joules)
• Includes a 3mm 40D green shock pad to prevent piston impact noise against the SSG head
• Shock pads in various hardnesses and sizes available (see related products)

The piston is optimally designed to work with 9mm springs and the Stalker spring guide. It can be used with 7mm springs, but this is not recommended for best results.

The piston includes 2 adjustable airbrakes for optimal tuning based on your setup.

• 1 short airbrake (4.40 mm) — optimal for 2J and 3J~ or higher builds.
• 1 long airbrake (4.40 mm) — optimal for 2J~ or lower builds.

The newly designed piston features a slightly modified piston cup for optimal performance in SSG10 cylinders. This cup works from 1J up to 4J+.

Golden Rules of Installation

• Always apply a drop of silicone oil or grease on the cup edge to achieve optimal joules.
• For 2.3J setups, start with the short airbrake and fully unscrew it.
• For 2.8J+ setups, start with the short airbrake and fully screw it in.
• Always set your hop-up correctly for your desired BB weight and adjust for straight shooting.
• Higher joules = shorter airbrake
• Lower joules = longer airbrake
• Choose your airbrake, start low, then gradually unscrew until the setup is silent.
• When you start losing joules, you’ve passed the perfect airbrake position — screw it back in slightly to regain joules and achieve the quietest setup.

Good setups require adjustable airbrakes because many rifle components can alter piston acceleration speed: trigger weight, spring power, cylinder bore hardness, cylinder length, piston weight, etc. We also recommend purchasing additional spring guide spacers to experiment with piston weight and spring joules.

Kit Includes:

• 1x Stalker Scorpion 9mm spring guide (with Stalker logo engraved)
• 1x 3mm 40D green shock pad (cylinder head not included)
• 1x Piston cup (works only with SSG10 cylinders)
• 1x Aluminum piston head
• 1x Stainless steel piston body
• 5x Aluminum weights
• 4x Stainless steel weights
• 1x Stainless steel end cap (15g)
• 2x Adjustable airbrakes (long and short)
• 1x Locking nut to secure airbrake setting
• 10x O-rings for between weights or stock to prevent weight loosening during use
• 2x Front and rear POM guide rings (specifically for SSG10 specs)

Details:

The Scorpion piston is a unique concept where six weights form the piston body itself. Since the piston is made of these weights, you can extend it with additional weights (short stroke), reducing cylinder volume and joule output, but increasing reload speed. The...