SKU: 70285345824

Ultimate SRS Upgrade Kit (570mm Barrel 2.0–2.5 Joule)

$141.30 $157.00
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Ships within 48 hours · Estimated delivery Jul 20 - Jul 25

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Description

Ultimate SRS Upgrade Kit (570mm Barrel 2.0–2.5 Joule)The Ultimate Stalker Upgrade Kit to make your Silverback SRS a beast of a sniper. This upgrade kit makes your SRS accurate, consistent and silent! Load up your magazines and dominate the field like never before. The package includes the following Stalker upgrades. Stalker SRS Kraken Hopup Chamber Ultimate Edition Stalker SRS Scorpion Ultimate Edition Stalker Morpheus 570MM Inner Barrel Stalker SRS Fluted Teflon Cylinder Stalker Official Logo Patch We

The Ultimate Stalker Upgrade Kit to make your Silverback SRS a beast of a sniper. This upgrade kit makes your SRS accurate, consistent and silent! Load up your magazines and dominate the field like never before.

The package includes the following Stalker upgrades.

We strongly believe that Rapax springs are the best springs on the market. The results with these springs and the Stalker upgrades 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 are able to purchase this kit with the mentioned discount. If the products are not in your shopping cart you will see a blank page, meaning one of these products is not available.

Product Description:

Kraken Hopup Chamber

  • Easy setup for both experienced and new players (~2-minute bucking swap)
  • 100% self-alignment system for perfectly straight setup
  • 100% Straight / 100% Seal patented Kraken bucking
  • Adjustment wheel head cut-out for easy adjustment
  • O-ring guided wheel
  • Custom-made steel hop arm screw
  • Laser-engraved white letters and text
  • Front O-ring to prevent BBs from falling into the receiver
  • Modular chamber design to fit most VSR buckings, bridged/unbridged barrels and nubs
  • Modular arm section to swap and use the S1, S2 and S3 arms
  • V-groove island for upper outer barrel screw (SRS A1)
  • V-groove for lower outer barrel screw (SRS A2)
  • Side flat body cutouts for future Stalker products
  • Fast setup for easy inner barrel or bucking swaps and barrel cleaning

SRS Scorpion Piston

The Stalker Scorpion piston features an extremely modular design that was developed from scratch. It offers every option players could want for their SRS piston. This unique concept uses 6 weights that form the piston body itself. Since the piston is made up of these weights, it can be extended with additional weights (short-stroke), which reduces cylinder volume and joule output.

Morpheus 570MM Inner Barrel

The Morpheus Hybrid Barrel is made from highly durable SUS304 stainless steel and features a Dualbore tapered end-crowning to improve range and accuracy.

We use stronger and more durable seamless SUS304 steel to raise the standard. Most brands use SUS303 seamed steel because it is easier to machine. SUS303 stainless steel has reduced corrosion resistance due to its composition, as it is optimized for machinability. SUS304 steel is harder to machine but offers superior durability and excellent corrosion resistance.

Fluted Teflon Cylinder

This cylinder is a Teflon fluted version of a standard cylinder, giving your SRS A1 or A2 an outstanding look. The inner coating is applied using a cold treatment process, allowing the cylinder to retain its perfectly straight shape—unlike many heat-treated cylinders. In addition to enhanced aesthetics, the special inner coating improves energy transfer with the piston, potentially increasing joule output if your piston has a properly sized cup.

  • Fully compatible with both Silverback SRS A1 and A2 receivers
  • Compatible with both A1 and A2 bolt handles
  • Works with aftermarket pistons

Rapax 2J+ RMS Spring

The Rapax Modular Spring (RMS) series is manufactured to the same high-quality standards as the Light Pull series. Designed for durability and performance, these springs provide an exceptional sniper experience. Compared to the Light Pull series, RMS springs are considerably shorter, have a slightly heavier pull, and deliver quieter shots. They are also electrically coated to prevent rust and ensure smoother operation on the spring guide.

*Box shown for promotional purposes only and is not included*

If you have any issues or questions about this or other Stalker products, please visit our Stalker Owners Group on Facebook here: https://www.facebook.com/groups/329589544772075/

You can follow all live feeds, photos, and updates on Instagram, Facebook, or YouTube:

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: 70285345824

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4.7 ★★★★★
Based on 25 reviews
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Product Reviews
K
Verified Purchase
karine
Pawtucket, US
★★★★★ 5
Works
Size: 3 Panel-102'', Color: Beige, Size: 3 Panel-102'', Color: Beige
It’s beige and not white. Once install - hard to disinstall. Need a drill to put it together
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 4, 2026
R
Verified Purchase
ralversity
Cuba, US
★★★★★ 3
Does the job, but assembling by yourself is a nightmare
Size: 4 Panel-88'', Color: Black
Does it do the job? Yes, although as others said there are small gaps but it's not a huge deal. The price is also good. But the reason I'm giving it a 3/5 is simply because the assembly for this was a complete nightmare. I honestly don't think I would recommend this to anyone unless they have another person to help them assemble it, because doing it by myself was terrible. I don't think I'd buy this again, I think I'd opt to just spend a bit more money and save myself the trouble personally.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 29, 2026
T
Verified Purchase
Talagand
Draper, US
★★★★★ 4
Reasonably adequate room divider
Size: 4 Panel-88'', Color: Beige
I'm reviewing this as I assemble it. Couple things: 1. I didn't expect as much assembly. I've ordered dividers before and they more-or-less came as one unit. Sometimes the panels needed screwing together. These require complete assembly and come largely as three rods: two make up vertical columns and snap together. Another one (called part "C") makes the horizontal columns and you have two of these per panel (one attaches to part "A" and the other part "B"). These parts are metal with a plastic shim. Using the wood screws to attach to part "C" is a real pain in the neck. There's not much holding the panel in place so it's a little tricky. One tactic I've found while I'm assembling that works for the initial connections from parts A and B to their respective "C" rods is to hold the screw in place with a screw driver and then rotating the rod around the screw. This will do a number on your hands if you aren't wearing gloves. This obviously doesn't work when completing the connection. Using a driller driver on this is really near impossible because there isn't anything you can use to secure it in place. You can use it on the first panel, but as it gets longer, it becomes increasingly difficult and because it isn't wood, it's really tight. I considered drilling larger pilot holes but since there are only 4x4=16 screws I need to screw in, I just decided to use my screw driver to complete it. 2. Also related to assembly. When completing the panels (attaching parts "A" and "B" to parts "C" that have the cloth cover on it), you have to be careful that when you tighten that side that it isn't loosening the other side. Because the pilot holes are so tight, you can end up rotating the rod, which rotates it in the same direction as looser on the original side. Having someone hold the "C" rod in place while you screw it in is probably the easiest approach. I didn't have a 2nd person, so I just had to keep flipping back and forth and tightening both sides as I screwed it in. Not the worlds biggest deal, but annoying nonetheless. 3. The way the instructions are written, they seem to suggest building this thing progressively; that is, you do panel 1, then 2, connect them together, then do 3 and connect it, etc. I took a different route that I suspect saved me quite a bit of trouble, and I assembled all four panels first and THEN connected everything together. 4. For the love of God make sure you check that the plastic tip is on the same side for every panel. Otherwise, you have to take one side apart again and reverse it. On the bright side, if this happens, you've essentially bored out the pilot holes to be the correct size... which is having me question if I shouldn't have just bored them out to the appropriate width in the first place. 5. Attaching all of the panels together is also an enormous pain in the ass unless you happen to have an 88" long elevated surface. Attaching the legs either requires you to elevate one side, which will invariably twist the inexplicably cheap material in the bottom connectors... or you can attach them sideways... or you can put this thing upright, having two people hold the panels in place while you use the allen wrench to tighten the bolts on the underside. None of those are particularly great options. NOW on to the utility itself. 1. The panels do let some light through (I didn't believe their advertising, and that was one of the reasons that I bought beige, is that I wanted it to not be too dark). They aren't transparent though, so it isn't that far off from their description. They functionally work great, and keep the mess of wires hidden and when I'm sitting at my desk, actually reflect quite a bit of light into my office. Great! 2. My wife has described these as "the most hideous piece of furniture ever conceived of by man." So it does not have spouse approval factor. Granted, she will seldom be in my office area, so that isn't the end of the world. 3. These are really hard to align in a way that doesn't look a little tacky. There are some plastic connectors but they don't do a bang up job of keeping these in place. Each panel is slightly tilted and it's... quite obvious. I may at some point make my own improvements to these to help make them more level. It's not a particularly expensive product so I wasn't expecting much so it's fine and I'm not going to ding them on the rating because of it. All said, would I buy this product again? Probably not. It's assembly was ~90 minutes which is about 75 minutes longer than I was anticipating spending on this (not including the 5 minute writeup that I'm doing here). But am I going to return it? Also no, if for no other reason I'd be just as annoyed taking it apart and putting it in the original box to return it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 31, 2023
L
Verified Purchase
Lisa Ryan
Fort Morgan, US
★★★★★ 5
Great product
Color: Black, Size: 4 Panel-88''
Literally exactly what I was needing
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 1, 2026
G
Verified Purchase
Grumpy
Cuba, US
★★★★★ 5
It's good...
Color: Black, Size: 4 Panel-88'', Color: Black, Size: 4 Panel-88''
It's good....took about 45 minutes to put together. No issues. Looks great...made the wife happy....
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 14, 2026

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