Power up your blaster with this Worker 9kg upgrade spring.  Compatible with the Longshot CS-6 and the Zombiestrike Longshot CS-12. Provide serious firepower to your blaster with this upgrade spring.

This 9kg spring has been designed to use with reinforced, strengthened Longshots.  Get the max fps out of your blaster whist retaining a manageable priming force.  To make full use and performance out of this spring you will need a sealed breech of some kind/make.  Comes included with silicone buffer/dead space remover, upgraded catch spring.

Make sure you re-install the stock 'prime indication bar'.  This both serves as a stopper when priming back, and also holds the catch spring from popping out of place.

Expectations.  Variables considered, depends on darts used (quality/condition), Blaster condition, breech used, lubrication and how well it is been maintained, seal etc.
Stock Longshot = 90-100fps
Sealed breech (pusher kit)= 170-180fps
Sealed breech (brass breech)= 180-190fps

Blaster compatibility:  Zombiestrike Longshot CS-12 and Longshot CS-6.

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. Always use approved darts. 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.