[Product Information]

• Enter your model numberto make sure this fits.
• One 8kg custom fitted upgrade spring.
• Compatible with Nerf Longshot and Zombie Strike Longshot.
• 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.