SKU: 7305055929

Upgrade for SRS 22" (2.8 Joules)

Sale price$197.55 Regular price$219.50
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Ships within 48 hours · Estimated delivery Aug 2 - Aug 7

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Upgrade for SRS 22" (2.8 Joules)The Upgrade kit turns your SRS into a true sniper beast. This UPGRADE makes your SRS precise, consistent, and quiet! Load your magazines and dominate the field like never before. The package includes the following upgrades: Kraken SRS Ultimate Edition STALKER Scorpion Piston SRS (Ultimate Edition) "Morpheus" Dual Bore Hybrid Barrel (510 mm) Kraken SRS Concave Bucking 70 (Gen 2) Teflon Lightweight Cylinder For SRS A1 A2 STALKER Official Logo Patch

The Upgrade kit turns your SRS into a true sniper beast. This UPGRADE makes your SRS precise, consistent, and quiet! Load your magazines and dominate the field like never before.

The package includes the following upgrades:

We firmly believe that Rapax springs are the best springs on the market. The results achieved with these spring upgrades and Stalker components are outstanding.

*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 added to your shopping cart, you will see a blank page, which means one of these products is not available.

Product descriptions:

Kraken Hop-Up Chamber

  • Easy setup for both professional and new players (Bucking change in ~2 minutes)
  • 100% self-alignment system for a perfectly aligned setup every time
  • 100% aligned and sealed with Kraken hop-up buckings.
  • Toothed adjustment wheel for easy tuning.
  • O-ring guided adjustment wheel.
  • Custom-made steel cam screw
  • White laser-engraved lettering and markings
  • Front O-ring to prevent BB drop.
  • Modular chamber design to fit most VSR-cut buckings, bridged and unbridged inner barrels, and nubs.
  • Modular cam section, allowing interchangeability between S1, S2, and S3 cams.
  • V-slot for the upper external barrel screw on the SRS A1.
  • V-slot for the lower external barrel screw on the SRS A2.
  • Side cutouts on the body for future STALKER products.
  • Quick setup for easy inner barrel or hop-up bucking changes and inner barrel cleaning

Scorpion Piston SRS

The Stalker Scorpion piston features an extremely modular design that was developed from scratch on my drawing board a long time ago. It offers all the options players could want for their SRS piston. It is a unique concept in which 6 weights form the piston body itself. Since the piston is built from these weights, it is also possible to extend it with additional weights (short-stroking), which in turn reduces cylinder volume and joules.

Morpheus 510MM Inner Barrel

The Morpheus hybrid barrel is made from highly durable SUS304 stainless steel and features a conical crown (Dualbore) to improve range and accuracy.

We use the more durable and resistant seamless SUS304 steel because we wanted to raise the standard. Most brands use SUS303 steel because it is easier to machine. The corrosion resistance of SUS303 stainless steel is reduced due to its composition, as it is specialized for machining. The SUS304 steel we use is more difficult to machine but far more durable and offers excellent corrosion resistance.

Teflon Cylinder

This cylinder is a Teflon-coated version of a standard cylinder. The internal coating treatment is a cold process, allowing the cylinder to retain its straight shape, which is often not the case with heat-treated cylinders. The cylinder also features a special internal coating that provides improved energy transfer with pistons, which may increase joule output if your piston has a properly sized cup.

This cylinder is fully compatible with Silverback SRS A1 and A2 receivers.

This cylinder thread works with both A1 and A2 bolt handles.

This cylinder is compatible with various aftermarket pistons.

Rapax 2.8J

Galvanized to prevent oxidation, reduce friction, and provide extended service life compared to other springs.

*The box is for promotional purposes only and is not included*

You can follow all live feeds, photos, and information on Instagram, Facebook, or via email here:

Facebook: https://www.facebook.com/StalkerAirsoftDesigns/
Instagram: https://www.instagram.com/stalkerairsoftdesigns/
Youtube: https://www.youtube.com/channel/UCWsBiSHlu-lbcnGQWAkeJWQ

For more information about Stalker Products, Tech & Crafting Guides Please Visit: www.stalkerairsoft.com

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. 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
SKU: 7305055929

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A
Verified Purchase
Amazon Customer
Natrona Heights, US
★★★★★ 5
Great product
Style: C20 Parts * 19pcs
Fits great
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 25, 2026
T
Verified Purchase
Tatiana
Alexandria, US
★★★★★ 3
Dust bags not compatible
Style: C20 Parts * 19pcs
Dust bags do not work. Not compatible as described, everything else works
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 1, 2026
D
Verified Purchase
Dashiel Castellanos
Battle Creek, US
★★★★★ 5
Kit de Respuestos
Style: C20 Parts * 19pcs
Excelente Kit de respuestos para para mi Robot de Limpieza, ya los instalé y súper bien , me gustaron mucho
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 21, 2026
R
Verified Purchase
R. V.
Pawtucket, US
★★★★★ 2
Not compatible with eufy Omni C20.
Style: C20 Parts * 19pcs
The filters are too small. To avoid dust laden air from just going around them I put pieces of paper around the edges as spacers. But they're also shorter too. No chance of a reasonable seal. Then the vacuum bags are the wrong size too. The robot gives me an error message saying "no vacuum bag is detected". The mop still works, but no vacuum action. I only bought this kit because the one I was using (that works) was temporarily unavailable. Never again.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 19, 2026
T
Verified Purchase
TWood
New York, US
★★★★★ 5
Perfect
Size: 23 Pcs for eufy C20 Omni
Great quality and cost efficient
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 30, 2026

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