HW35 Mainspring, Low Power, 7.5J

HW35 Mainspring, Low Power, 7.5J

• HW35 mainspring
• Low-power version
• Delivers 7.5 joules (5.53 ft-lbs.)

If you want to replace your HW35 mainspring with the same power spring that came with the gun, search for BNP-9004.