RS1 Recoil Spring is made of high strength spring steel. Its short length design with 2 different tensioned coil zone can enhance the efficiency of recoil cycling. Also it can improve the recoil control and make easier handling on blow back cycling.

COWCOW Technology RS1 Recoil Spring for Tokyo Marui Hi-Capa GBB
Made from High Strength Spring Steel
Hard Coating Prevents Corrosion
Provide 120% / 140% power on different tension zone
Shorten length with harder coil
Improve cycling efficiency
Fully compression by shorten spring length
Cycling enhancement through 2 different tensioned zones
Compatible with Tokyo Marui and other similar Hi-CAPA / 1911 Series Airsoft GBB Pistols