SKU: 69132408067

Ultimate SRS Upgrade Kit (510mm Barrel 3.0–3.5 Joule)

Sale price$164.22 Regular price$182.47
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Ships within 48 hours · Estimated delivery Jul 17 - Jul 22

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Description

Ultimate SRS Upgrade Kit (510mm Barrel 3.0–3.5 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 rock the field like you never did before. The package includes the following Stalker upgrades. Stalker SRS Kraken Hopup Chamber Ultimate Edition Stalker SRS Scorpion Ultimate Edition Stalker Morpheus 510MM Inner Barrel Stalker SRS Fluted Teflon Cylinder Stalker Official Logo Patch

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 rock the field like you never did before.

The package includes the following Stalker upgrades.

We strongly believe that the Rapax springs are the best springs on the market. The results with this spring and the Stalker upgrades are perfect.

*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.

Products Description :

Kraken Hopup Chamber

  • Easy setup for pro and new players (~2 minute bucking swap)
  • 100% self-alignment system for always straight setup
  • 100% Straight / 100% Seal Patented Kraken Bucking
  • Adjustment Wheel Head Cut-Out For Easy Adjustment.
  • O-ring Guided Wheel
  • Steel Custom Made Hop Arm Screw
  • Laser Engraved White Letters And Text.
  • Front O-ring to Avoid BB’s Falling Into 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 Product
  • Fast setup for easy barrel or bucking swap or cleaning barrels

SRS Scorpion Piston

The Stalker Scorpion piston has an extremely modular design which was made from scratch on my drawing table a long time ago. It has all the options people could want for their SRS piston. It is a unique concept where 6 weights form the body itself and as the piston itself is made up of these weights, it is also possible to extend the piston with additional weights (short stroke), which in turn reduces the volume of your cylinder and joule output.

Morpheus 510MM Inner Barrel

The Morpheus Hybrid Barrel is made out of very durable SUS304 Stainless Steel and has a Dualbore tapered end-crowning to upgrade your range and accuracy.

We used the more durable and stronger SUS304 seamless steel because we wanted to step up the game a bit. Most brands use SUS303 seamed steel because it's easier to machine. SUS303 stainless steel's corrosion resistance is weakened due to its composition as it's specialized for machinability, so the SUS304 steel we use is harder to machine but more durable and has wonderful corrosion resistance.

Fluted Teflon Cylinder

This cylinder is a Teflon Fluted Version of a normal cylinder and makes your SRS A1 or A2 look super cool. The cylinder inner coating treatment is a cold treatment, so the cylinder retains its straight shape, which is often not the case with heat-treated cylinders. Your SRS not only gets a boost in looks, but the cylinder also has a special inner coating which provides better energy transfer with pistons and may also increase your joules if your piston has a correctly sized cup.

  • This Cylinder is fully compatible with both Silverback SRS A1 and A2 receivers.
  • This Cylinder thread works on both the A1 and A2 bolt handles.
  • This Cylinder works with aftermarket pistons.

Rapax 3J+ RMS Spring

The Rapax Modular Spring series is made with the same quality standards as the Light Pull series springs. With durability and quality, they are made to give you the best sniper experience. The difference from the Light Pull series is in its length (considerably shorter than the Light Pull series), slightly harder pull, but increased silent shots. Also, RMS springs are electrically coated to prevent rust, which provides smoother operation on the spring guide.

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 my live feeds, photos, and information on my Instagram, Facebook or YouTube channels 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: 69132408067

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Cheryl
Bozeman, US
★★★★★ 5
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Style: Ball, Size: Medium (Pack of 2)
My dog loves these balls!
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Reviewed in the United States on May 25, 2026
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ShainaKatt
Cuba, US
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Dogs love them
Style: Ball, Size: Medium (Pack of 2)
Our dogs love these. What’s great is that you can add more plastic (like from water bottles) if the plastic starts to fall out from the center. If you have a chewer, though, these won’t last you long. Our shepherd mix loves these and then starts to pull the rubber apart the more she plays with it. Our other dogs treat it normally, though, and those ones last forever. They also get some decent height when bounced, and they make a unique whistling noise when thrown.
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Reviewed in the United States on November 17, 2025
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waragon
Bozeman, US
★★★★★ 4
Our pup loves the cronch cronch!
Style: Ball, Size: Medium (Pack of 1)
I bought our 15 month old Coton several Chuck-It toys on an Amazon deal. He is incredibly playful, mischievous, and ball/toy obsessed, especially for anything that makes noise. He can also be very destructive so I love how durable most of their products are - they’re among our longest lasting toys and worth every penny. We have yet to take them to the dog park, but they’re a perfect size for sharing in play time. And they are keeping him busy at home - that’s a good thing. He loves investigating the crunchy-cronchy-crinkly sound which is a nice change from squeakers. It can withstand his destructive chewing well-being, gentle on his little teeth. I love that. Chuck-It is thinking outside the box with a variety of balls to keep dogs engaged! I do worry about the crinkle plastic inside because it is accessible because of the air holes and it feels a little sharp. So this will have to be an at home toy so we can monitor his play.
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Reviewed in the United States on May 28, 2026
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Mystical Lady
Birmingham, US
★★★★★ 5
Great products all around
Style: Ball, Size: Medium (Pack of 2)
Any of these balls are great! My dogs love all of them. The squeaky ones are their favorite!
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Raquel
Battle Creek, US
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This crunch ball was a Christmas gift for my 65lbs fur baby. It’s now mid April and he still loves it. He loves running after it and chomping down on it. It is still in good shape despite all the chomping it’s gotta . I highly recommend. He goes back to this toy agin and again! Great buy.
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