Power up your blaster with this 10kg upgrade spring.  Compatible with the Recon MkII, Elite Alpha Trooper, Rampage, Retaliator, Tri-Strike, Doominator, Zombie Strike Slingfire, Delta Trooper, Mega Bigshock.  Provide more firepower to your equipment with this simple upgrade spring.


This is an advanced spring.  Only purchase this spring if you are an experienced modder.  Catastrophic blaster failure (ie you will break it) will occur if your blaster is not strengthened.  Sufficient blaster reinforcement is needed with use of this spring.

This 10kg spring has been designed to use with reinforced, strengthened Elite blasters.  This is a very strong Elite spring, you may need to make some modification to enable the baster to catch (ie fill the plunger head a little to give it more throw).  Use of a upgraded stronger plunger/head is recomended.  The stock plunger head is very fragile and will fracture/break.  Upgraded catch spring is needed.  Please select from the pull down menu.

Expectations.  Variables considered, depends on darts used (quality/condition), Blaster condition, breech used, lubrication and how well it is been maintained, seal etc.
Stock Retaliator = Don't use with stock Retaliator (use our 5.5kg elite spring).
Sealed breech (pusher kit/standard plunger tube)= 130-140fps
Sealed breech (brass breech/standard plunger tube)= 140-150fps

These are our own BlasterTECH springs, designed and tested in house.  They are made from high quality spring steel from our own direct spring manufacturer.  Australian made.

Blaster compatibility:  Elite: Recon MkII, Elite Alpha Trooper, Rampage, Retaliator, Tri-Strike, Doominator, Zombie Strike Slingfire.

Note:  You will need to upgrade your Catch Spring with this 10kg main spring.

Important Safety
Blasters are modified at your own risk.  BlasterTECH will not accept any liability for damage or reduction of lifespan of your blaster.  BlasterTECH will not accept any liability for injury caused during or after modification.  The items on this site are safe as long as the operator uses it safely. The items on this site are to be used by those 18years or older.  Always wear protective eye wear whilst using blasters. Never point or aim at someone's eyes or face. By purchasing these items you will use it in a safe and responsible manner and you agree that BlasterTECH will not be liable for any injury caused by misuse or accidental usage.