[Product Information]

• Enter your model numberto make sure this fits.
• 7kg custom fitted upgrade spring.
• Compatible With: Strongarm， Firestrike， Roughcut (requires TWO (2) Springs)， Crossfire， Sidestrike， Blazefire， Crosscut， Flipfury， Brainsaw， & Imperial Death Trooper.
• Mod at your own risk! Increasing the spring tension can break or damage stock internal components of your blaster.
• Some blasters are extremely hard to reassemble， and we won't be able to troubleshoot problems due to user error.
• Blaster not included.