Spring for NERF Hammershot, Sweet Revenge & Persuader (V1)
Spring Load: 10.4+kg
A tested and proven hardened spring to make your gun shoot further.
Do note that Black Technology is not responsible for your gun if you were to spoil it when modding the gun.
If any modding services is required, do contact us via email.
Remember not to dry fire your guns after doing mods.
FOAM MOD FAQ Click HERE