Upgrade Spring

Upgrade Spring



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  • Materials: steel

An upgrade spring for most Nerf blasters - available in two sizes:

This spring is roughly twice as powerful as the default spring, and gives your Nerf blaster that extra edge in foam combat.

The "Elite" size fits:
* Elite Alpha Trooper (not the old yellow CS-12 - the new blue one)
* Rampage
* Retaliator (and its variations)
* Zombie Strike Slingfire

The "MEGA/Stampede" size fits:
* Stampede ECS
* Cycloneshock
* Rotofury

Boring legal bits:
Item is not a toy, unsuitable for persons under the age of 14.
Listing is for the stated item(s) only, and any darts, blasters, magazines etc are for illustrative purposes only.

All blasters are modified at your own risk. Modified dart blasters are not toys and upgrades should not be purchased by those under the age of 16. Blastersmiths UK Ltd does not accept any liability for damage or reduction in lifespan of your blaster. Blastersmiths UK Ltd also does not accept liability for any injury caused during or after modifying your Nerf blaster. It is the end user's responsibility to use a modified blaster appropriately and safely - eye protection is strongly recommended when using any modified blaster. Purchase and use of one of these items is taken as acceptance of these terms.

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Estimated arrival

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May 18-Jun 4

May 10

Order placed

After you place your order, BlastersmithsUK will take 3-5 business days to prepare it for shipment.

May 13-17

Order ships

BlastersmithsUK puts your order in the mail.

May 18-Jun 4


Estimated to arrive at your doorstep May 18-Jun 4!

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Ships from United Kingdom

36 reviews

4.5 out of 5 stars

Mark Aug 16, 2020

5 out of 5 stars

These springs are great, I bought two, and they made a massive improvement to both my retaliator and rampage, they now fire hard enough to be competitive in any nerf war without being to difficult to prime. I can wholeheartedly recommend them to anyone wanting a performance upgrade that is easy to fit. You guys are the best, and I will definitely be a return customer. Many thanks from a very happy nerf hoarder.

timbocollins172 Jun 16, 2020

5 out of 5 stars

Perfectly rated springs. Great performance upgrade without overstressing internals plus you don't need arms like Schwarzenegger to prime! Thanks again.

Mark Aug 22, 2020

5 out of 5 stars

This mega spring is awesome. I fitted it into my mega magnus and it has made a world of difference. Power and range are now on par with all my elite blasters. Prime is noticeably firmer but still manageable. Highly recommended for magnus although it looks short compared to the original spring it performs really well. Thanks again guys you are fantastic.

Hallam Curtis Jun 27, 2020

5 out of 5 stars

Was a bit sceptical of the roughly double the strength of the standard spring until i installed them. Just from the sound of the darts hitting the wall you can tell they are much more powerful. Great product and turned up really quickly, will definitely be buying more in the future

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