AirsoftPro Reinforced spring for low capacity AEG magazines. This is spare spring, which replace original one in your low-cap.magazine. Is made of stronger steel spring wire (diameter +0.1mm) with proper temper. Thanks of this it is able to push out heavy bullets with higher speed. If you have gun with high rate of fire, standard magazines could cause problem with slow bullet feeding. This our AirsoftPro spring may solve your problems. Notice: With this stronger spring, you loose some capacity of the magazine (due to wire diameter). For example 70 round magazine can hold around 60 BBs. Material: Steel spring wire DIN 17223/C Application: All low-cap magazines up to capacity 80 BBs Purpose: For faster supply heavy bullets from the magazine Weight: 3,9g Spring shape round