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 Jul 19 - Jul 24

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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Sharon A. Hall
Lake Worth, US
★★★★★ 1
Asurion "Assures" nothing!
Asurion has terrible Customer Support. All machine based. They give you no phone # for human interaction. Their online Support process is very close-ended. It is a checklist designed to frustrate purchasers whose issue lies outside only the very issue. My issue: I bought "Cuisinart TOB-40FR Custom Classic Toaster Oven Broiler, Silver (Renewed)" on May 26, 2024. It stated it had a 90 day warranty. So I bought an Asurion Protection Plan also to cover it for 3 years. The toaster started flaking off metal finish inside the oven over the cooking area. I tried to file a claim with Asurion and they told me the Manufacturers warranty was still in effect and I should contact Cuisinart. This despite the oven was sold with a Amazon Renewed verbiage stating a 90 day warranty. And they have nothing on their "Machine Checklist" to cover this eventuality. And I would assume I am not the only one who takes the "Renewed" route and backs it up with a "Protection Plan". They will frustrate you no end. I suspect, like many insurances, they seek to deny, deny, deny, in hopes the purchaser will give up.
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Reviewed in the United States on January 4, 2026
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Verified Purchase
Darla
Belleville, US
★★★★★ 4
GIFT CARD AS REPLACEMENT, NO CHOICE OF CHECK OR REPLACEMENT. GOOD COMPANY
PROS: * A decent company, responsive and fair. * Allows you to buy items from anywhere you want, and buy the warranty at Amazon. * Provides better coverage than other warranties, and covers more, including breakage! CON: They don't send you a check in order to buy wherever you want, send a replacement, or give you a choice. Instead, they send you an Amazon Gift Card. That's OK if you're a big Amazon shopper, but sometimes, you can get a better price elsewhere.
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Reviewed in the United States on December 10, 2025
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Luis Ortiz
Port Orchard, US
★★★★★ 5
Asurion has been outstanding. Their customer service is quick, reliable, and efficient.
Every time I’ve had a problem, Asurion has been outstanding. Their customer service is quick, reliable, and efficient, and they handle claims with minimal hassle. It’s reassuring to know they actually follow through and resolve issues promptly.
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Reviewed in the United States on April 16, 2026
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Glen Armstrong
Pawtucket, US
★★★★★ 5
Good protection, easy process
First time filing a claim. Super easy and fast. Nice to have have protection and a smooth claims process when the unfortunate happens..
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Reviewed in the United States on April 25, 2026
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K. Shockley
Los Angeles, US
★★★★★ 5
Ease of making a claim and quick return time for claim.
Very easy to work with.
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Reviewed in the United States on May 21, 2026

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