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SRS 16" FDE Covert Full Upgraded by Skirmshop (2.8 Joules)
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Pickup available at Skirmshop Spain
Usually ready in 24 hoursThe Upgrade kit transforms your SRS into a sniper beast. This UPGRADE makes your SRS accurate, consistent, and quiet! Load your magazines and dominate the field like never before.
The package includes the Silverback SRS A2/M2 16" Covert (FDE) and the following Upgrades
- Kraken SRS Ultimate Edition
- STALKER Scorpion Piston - SRS (Ultimate Edition)
- Morpheus Dual Bore Hybrid Barrel (420mm)
- Kraken SRS Concave Bucking 70° (Gen 2)
- Teflon Lightweight Cylinder For SRS A1 / A2
- STALKER official logo Patch
- Carbon dummy suppressor, Short, 24mm CW
- Assembly of the replica, functionality test, and Chrono.
We firmly believe that Rapax Springs are the best springs on the market. The results with these spring and Stalker upgrades are perfect.
- Rapax 2.8 J spring - made for – SRS/TAC41/SSG/VSR (Spacers included if necessary)
*Note: this upgrade discount is only available when all products are in stock. Click 'add to cart', if all products are visible, you can purchase this kit with the mentioned discount, if the products are not in your shopping cart, you will see a blank page indicating that one of these products is not available.
Product Descriptions:
Kraken Hop Up Chamber
- Easy setup for both professional and new players (Rubber change in ~2 minutes)
- 100% self-aligning system for always aligned configuration
- 100% aligned and sealed with Kraken Hop Up rubbers.
- Notched adjustment wheel for easy tuning.
- Adjustment wheel guided by O-ring.
- Custom steel Lever screw
- Engravings in white Laser
- O-ring at the front to prevent BBs from falling.
- Modular chamber design to fit most VSR cut rubbers, inner barrels with and without bridge, and Nubs.
- Modular Lever section to interchange and use S1, S2, and S3 Levers.
- V-slot for the screw of the upper external barrel of the SRS A1.
- V-slot for the screw of the lower external barrel of the SRS A2.
- Side cutouts on the body for future STALKER products.
- Quick setup for easy swapping of inner barrels, Hop Up rubbers or cleaning inner barrels
Scorpion Piston SRS
The Stalker Scorpion piston has an extremely modular design that was made from scratch on my drawing board a long time ago. It has all the options that people might desire for their SRS piston. It’s a unique concept where 6 weights form the body itself, and as the piston itself is formed by these weights, it’s also possible to extend the piston with additional weights (short stroke), which in turn reduces the volume of your cylinder and the joules.
Morpheus 420MM Inner Barrel
The Morpheus hybrid barrel is made from highly durable SUS304 stainless steel and has a conical crown (Dualbore) to improve its range and accuracy.
We use the more durable and resistant seamless SUS304 steel because we wanted to enhance the gameplay. Most brands use SUS303 welded steel because it's easier to machine. The corrosion resistance of SUS303 stainless steel is weakened due to its composition, as it is specialized for machining, so the SUS304 steel that we use is more difficult to machine but more durable and has a wonderful resistance to corrosion.
Teflon Coated Cylinder
This cylinder is a Teflon version of a standard cylinder. The interior coating treatment of the cylinder is a cold treatment, allowing the cylinder to retain its straight shape, which is often not the case with thermally treated cylinders. The cylinder also has a special interior coating which provides better energy transfer with pistons, potentially increasing your joules if your piston has the right size cup.
This cylinder is fully compatible with Silverback SRS A1 and A2 receivers.
This cylindrical thread works on the handles of the A1 and A2 bolts.
This cylinder works with various market pistons.
Rapax 2.8J
Galvanized to prevent rust, reduce friction, and provide you with a longer usage period compared to other springs.
*The box is for promotional purposes only and is not included*
You can follow us on Instagram, Facebook or email us at:
Facebook: https://www.facebook.com/StalkerAirsoftDesigns/
Instagram: https://www.instagram.com/stalkerairsoftdesigns/
Youtube: https://www.youtube.com/channel/UCWsBiSHlu-lbcnGQWAkeJWQ
Email: info@skirmshop.es
For more information about Stalker Products, Tech & Crafting Guides Please Visit: www.stalkerairsoft.com
Pairs well with
In stock! Ships within 1-2 business days.
Complimentary shipping & returns

SRS 16" FDE Covert Full Upgraded by Skirmshop (2.8 Joules)
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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FAQs
Please read our FAQs page to find out more.
Do I need an account to order?
No, but an account lets you save addresses, review orders, download invoices and manage wish‑lists.
When will my order ship?
Orders placed before 15:00 CET on business days ship the same day if the
items are in stock. A tracking e-mail follows automatically.
Can I change or cancel my order?
Yes, e-mail orders@skirmshop.nl or use the contact form before 15:00 CET on the shipping day
with your order number. After dispatch, changes aren’t possible.
Do you ship outside the EU?
Yes, the shipping rates and import taxes will be calculated at checkout.
What is the minimum age to buy an airsoft replica?
Please check your own governments regulations for the minimum required age.
Don't forget to send your ID.