Ok ok, so its not a spring, but we thought its best fitting in this category.  This Hammershot 12mm 3d printed spacer is all you need to increase the FPS in your blaster in conjunction with the stock spring.  The stock spring on its own when primed gets no where near full compression.   This 12mm spacer enables full spring compression as well as some pre-compression resulting in higher FPS that most aftermarket springs and retains a easy prime with your thumb.  Its not rocket science.  Don't waste your money on a replacement spring.  We simply do not make a Hammershot spring for this reason!  12mm spacer is cheap, easy to install, effective.

Simply place this 12mm spacer in front of the stock spring as shown in the photos.  The spacer is designed to slip nicely over the Hammershots spring shaft to ensure a solid fitment.

Blaster compatibility:  Hammershot

NOTE: Listing is for a Hammershot Spring Spacer only, blasters and accessories are for display purposes only. 

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.