SKU: 41472728182

Upgrade for SRS 16" (2.8 Joules)

Sale price$191.30 Regular price$212.56
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Ships within 48 hours · Estimated delivery Jul 24 - Jul 29

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Upgrade for SRS 16" (2.8 Joules)The Upgrade kit turns your SRS into a 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 (420mm) Kraken SRS Concave Bucking 70 (Gen 2) Teflon Lightweight Cylinder For SRS A1 A2 STALKER Official Logo Patch Carbon

The Upgrade kit turns your SRS into a 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 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 do not appear in 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 letters and text.
  • 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 to interchange and use S1, S2, and S3 cams.
  • V-slot for the upper outer barrel screw of the SRS A1.
  • V-slot for the lower outer barrel screw of the SRS A2.
  • Side cut-outs on the body for future STALKER products.
  • Quick setup for easy inner barrel swaps, hop-up bucking changes, or inner barrel cleaning.

Scorpion Piston SRS

The Stalker Scorpion piston features an extremely modular design that was developed from scratch at my drawing table a long time ago. It includes every option users could want for their SRS piston. It is a unique concept where 6 weights form the body itself. Since the piston is built from these weights, it can also be extended with additional weights (short-stroke setup), which in turn reduces cylinder volume and joule output.

Morpheus 420MM 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 most 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 optimized for machining. The SUS304 steel we use is harder to machine but more durable and offers excellent corrosion resistance.

Teflon Cylinder

This cylinder is a Teflon-coated version of a standard cylinder. The interior 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 better energy transfer with pistons, which may also increase your 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 rust, 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 our 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: 41472728182

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4.1 ★★★★★
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K
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Kindle Customer
West Palm Beach, US
★★★★★ 5
great product
Reload type: One Time Reload
so easy, thanks amazon
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 9, 2026
M
Verified Purchase
M Osekou
Natrona Heights, US
★★★★★ 4
Great for keeping bank statements clean but random security delays are frustrating
Reload type: One Time Reload
I use the balance reload tool to manage my monthly budget and easily hit credit card sign-up bonuses. It keeps my bank statements totally clean by grouping dozens of tiny e-book and movie rental charges into one single transaction. Most of the time the whole process works flawlessly and the money shows up in my account within five minutes. It is honestly the easiest way to put a hard limit on my family's everyday online shopping. You just need to watch out for a few annoying system quirks when you load larger amounts of money. Even though it usually works instantly the automated security filter sometimes flags big reloads and freezes the transaction for hours. This random delay is incredibly frustrating if you are trying to add cash fast to catch a lightning deal before it expires. You also have to remember that this balance is strictly non-refundable and cannot be used to buy other gift cards. Overall this is still a great method for organizing online spending and maximizing your cash-back credit card rewards. It totally fixed how I track household purchases but you definitely have to tolerate the occasional processing delays. My best advice is to load your account a day or two before you actually need to buy a big-ticket item. It works perfectly as a budgeting tool as long as you know the rules and plan for the random security hold.
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Reviewed in the United States on April 14, 2026
H
Verified Purchase
Humberto Villarreal
New York, US
★★★★★ 5
Fast
Reload type: One Time Reload
Super fast easy to use and reload
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Reviewed in the United States on June 11, 2026
B
Verified Purchase
Bekhzod Uzokov
Phoenix, US
★★★★★ 5
Fantastic for gaming and productivity, but missing USB-C rechargeability
Color: Classic Black, Color: Classic Black
I recently purchased the Razer Orochi V2, and overall, it is an amazing mouse. The build quality is absolutely fantastic, and it feels premium. It fits perfectly in my palm, and the materials and clicks have a very pleasant tactile feel. I use it daily for both gaming and work, and it performs flawlessly in both scenarios. Compared to my Razer Pro Click, the Orochi V2 actually fits my hand much better. In fact, I now only use the Pro Click as a backup for when the Orochi's battery suddenly dies! There is really only one downside for me: it runs on disposable batteries rather than having a built-in rechargeable one. On the plus side, it only needs a single battery to operate, and I love the clever design that allows you to use either a standard AA or a smaller AAA battery depending on your weight preference. However, I would really love to see a future version of this exact mouse with a built-in battery and a standard USB Type-C charging port. If you don't mind swapping batteries occasionally, this is a near-perfect mouse. Highly recommended!
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Reviewed in the United States on April 6, 2026
G
Verified Purchase
Gogoferrari
Bozeman, US
★★★★★ 5
Amazing mouse even for big hands.
Color: White
So I have big hands and what any big hand gamer understands is that you either have to get a big ol heavy G502 size mouse or use a certain grip to hold all these mice for smaller handed people. I previously owned a Model O, G pro, and Model O wireless. Having big hands my biggest peeve with all the other mice is that they’re ambidextrous mice so they are even harder to hold with fingertip/claw grips because the smooth, near flat, symmetrical sides. I only really make contact with the sides by pinching my fingers with them. I never make contact with the butt or base of the mouse with my grip. There’s where the Orochi changes things The Orochi somehow is a smaller mouse than all of the above but fills out my hand and grip SO much better. The sides actually have slight grooves so I don’t slip off the sides of my mouse and the shorter but bigger hump in the middle makes me for once actually feel the mouse in my palm if I want. Overall the feel is amazing. Battery life varies of course but I can barely tell there’s a battery in the thing even when flicking and the weight and balance of it feel so good. Mobile gaming is the main reason I got this mouse. I like that the dongle stores inside the mouse, uses batteries so I don’t have to worry about keeping it charged or bringing around extra cables to charge it, and the Bluetooth is good for casual gaming but doesn’t do great with big flicks so the 2.4ghz connection is required for esports games. Overall a great mouse and really awesome to game with and a little plus to it is that the shell comes off the back so satisfying, it’s hard to not fidget with it by taking it on and off haha. Well worth the money and I’d expect they’ll make a rechargeable one with all the success this mouse has accrued so far so if the swappable batteries don’t tickle your pickle, I’d just buy a sub $20 rechargeable battery station or just wait for a new rechargeable Orochi to come out.
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Reviewed in the United States on May 20, 2021

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