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Description
Scorpion Piston for VSR-10 with Spring GuideThe new Stalker Scorpion piston kit for the VSR 10! Key features: Modular piston with adjustable weight (65 to 148 grams) Reduces noise in your VSR 10 Improves joule FPS consistency Adjustable air brakes with dual O ring cuts for optimal tuning Short stroke option for faster reloads (at the cost of some joules) Includes a 3mm thick, 40D hardness shock pad to prevent piston impact noise against the VSR cylinder head Shock pads in various hardnesses and
The new Stalker Scorpion piston kit for the VSR-10!
Key features:
- Modular piston with adjustable weight (65 to 148 grams)
- Reduces noise in your VSR-10
- Improves joule/FPS consistency
- Adjustable air brakes with dual O-ring cuts for optimal tuning
- Short-stroke option for faster reloads (at the cost of some joules)
- Includes a 3mm thick, 40D hardness shock pad to prevent piston impact noise against the VSR cylinder head
- Shock pads in various hardnesses and sizes available (see related products)
- Optimized to work with 9mm springs and Stalker spring guides.
The piston comes with two adjustable air brakes (3.80 mm) for optimal tuning based on your setup.
- 1 short air brake (3.80 mm) — optimal for 2J and 3J+ builds.
- 1 long air brake (3.80 mm) — optimal for 2J or lower builds.
Airbrake <> Cylinder Head Compatibility:
- Action Army cylinder head = 3.80 mm airbrake
- TM cylinder head = 3.80 mm airbrake
- Laylax cylinder head = 3.80 mm airbrake
- SSG-10 cylinder head = 4.40 mm airbrake
- Other cylinder heads = measure inner nozzle diameter and select optimal airbrake
3.80 mm Airbrake for Scorpion Pistons (SKU: ST-102)
4.00 mm Airbrake for Scorpion Pistons (SKU: ST-101)
4.40 mm Airbrake for Scorpion Pistons (SKU: ST-103)
The new piston design features a slightly modified piston cup for optimal performance in VSR-10 cylinders. This cup performs reliably from 1J to 4J+.
Installation Golden Rules:
- Always apply a drop of silicone oil or grease on the cup edge for optimal joules.
- For 2.3J setups, start with the short airbrake fully unscrewed.
- For 2.8J and above, start with the short airbrake fully screwed in.
- Always properly adjust your hop-up to your BB weight and ensure straight shooting.
- Higher joules = shorter airbrake.
- Lower joules = longer airbrake.
- Start with the airbrake in a low position and gradually unscrew it until the setup is quiet.
- When you start losing joules, you’ve passed the optimal position — screw it back in slightly to regain joules and achieve the quietest setup.
Optimal setups require adjustable airbrakes because many components affect piston acceleration speed — such as BB weight, spring strength, hop-up rubber hardness, barrel length, and piston weight. We also recommend purchasing spring guide spacers to fine-tune piston weight and joule output.
Kit includes:
- 1x Stalker Scorpion 9mm spring guide (engraved with Stalker logo)
- 1x 3mm thick, 40D hardness green shock pad (cylinder head not included)
- 1x Piston cup
- 1x Aluminum piston head
- 1x C...
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.9 ★★★★★
Based on 15 reviews
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Product Reviews
★★★★★ 5
Spacious, organized, and perfect for travel!
Size: Large, Color: Black
This travel laptop backpack is absolutely fantastic! It's spacious and well-organized with multiple compartments for everything you need. It's airplane carry-on approved and fits perfectly in the overhead bin. The laptop compartment holds up to a 17" laptop securely with great padding. The water-resistant material keeps everything protected and the straps are comfortable for long trips. Great quality for the price. Highly recommend!
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Reviewed in the United States on May 26, 2026
★★★★★ 4
Good bag for a good price
Size: Large, Color: Amourpink
Really loved this backpack. I got it after reading all the reviews and wanting something for travel. The inside pockets with extra compartments that are water proof or organizing was a really nice touch. I traveled on airlines with this a few times and then started using it for school as well. It help up really well. I tend to be kind of rough on things and unfortunately the zipper broke. I'm unsure of if I over stuffed it or it was just a cheaper zipper. I would have considered resorting it because I used and loved it so much but my mom's dog got to it and it was not salvageable after that. I would recommend this specifically as a great travel backpack for the air port but it can easily double as an over night bag or school back pack.
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Reviewed in the United States on April 13, 2026
★★★★★ 5
So big, but lightweight!
Size: Large, Color: Amourpink
I bought this backpack to have as my "personal item" on the many flights I have to take. It is the perfect weight, having a place for just about anything you'd want to have during a flight, as well as having your carry-on items. The charging port is a bit of a challenge to plug in because of how you have to position the cord, but it is doable. I did not end up using the charging feature on my most recent flight, but I can see how it would be helpful for the travel that does not provide many charging stations. I have some serious back issues, but even full, I found this backpack to be a reasonable weight. I cannot attest to it's durability at this time, as I've only taken it on two trips now, but it is a great bag. There are many compartments, which can be good and bad. I recently put my wallet with all my identification and cards in a compartment that was easily missed. I thought I had lost my wallet and was panicked about how I'd get on my return flight if I didn't find it. After completely emptying the bag in my friend's car, and running my hands all over the compartments, I found the wallet. Here's the thing, my wallet is not little, so you can see that the walls of this backpack are pretty thick. The pink color is more of a dusty pink, which I find to be more attractive than a bright pink for something like this.
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Reviewed in the United States on May 22, 2026
★★★★★ 5
Durable and easy to carry
Size: Large, Color: Amourpink, Size: Large, Color: Amourpink
I absolutely love this backpack! I got it for our two weeks long Northern Europe trip. It is very lightweight, spacious, and surprisingly comfortable even when fully packed. The compartments are well designed and make it easy to organize everything for travel. I especially liked how convenient it was for airport trips and fitting over the carryon’s handle and under the airplane seat. The material feels durable and the overall quality exceeded my expectations for the price. Stylish, practical, and perfect for short trips or everyday use. Highly recommend!
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Reviewed in the United States on May 19, 2026
★★★★★ 5
Great for kids getting ready for the World Cup
Color: Dallas, Size: 200 pieces
This is a great item for kids who love soccer
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Reviewed in the United States on May 19, 2026