HK Kar98K Upgrade Spring 1.3-1.6MM

Hanke Kar98K Spring Introduction：

Durable piano-wire spring (150 mm) boosts FPS and performance—choose 1.3–1.6 mm for the perfect balance of strength and smooth action.

Specifications:

• The thicker the spring wire, the more force required.
• Recommended: 1.3 mm wire spring for nylon bolt; 1.4 mm wire spring for metal bolt.
• With good air seal, a 1.3 mm spring can bring the Hanke Kar98k toy sniper to around 252 fps.
• With good air seal, a 1.4 mm spring can bring the HK Kar98k toy sniper to 262 fps+.
• And so on—spring is one of the factors that affects toy gun muzzle velocity.
• Material: Piano wire
  
• Length: 150 mm
  
• Wire diameters available: 1.3 / 1.4 / 1.5 / 1.6 mm