Enhance your UDL M870 foam dart blaster with this spring upgrade, designed to boost firepower and extend shooting range. Made from durable silver piano wire, it offers reliable performance and long-lasting use. Compatible with UDL M870 blasters and available in power options of 9, 10, 11.5, and 13 kg, this upgrade kit includes the spring, release spring, and an o-ring for easy installation and improved shooting experience.

Specifications:

• Brand: UDL.
• Compatibility: UDL M870 foam dart blasters.
• Power Type: 9/10/11.5/13 kg.
• Material: Durable piano wire.
• Color: Silver.

Package Includes:

• 1* UDL M1887 Spring Upgrade.
• 1* release spring.
• 1* o-ring.