Wilson Combat 1911 Complete Spring Kits provide you with all the springs needed to give that old 1911 a new lease on life or to complete that build. These heat treated music wire springs are some of the finest quality coil springs on the market and will provide you with exceptional service. Full Size kit contains the following springs: • 18 ½lb Recoil Spring • Extra Power Firing Pin Spring • 18lb Reduced Power Hammer Spring • Mag Catch Spring • Sear Spring • Plunger Tube Spring Commander kit contains the following springs: • 20lb Recoil Spring • Extra Power Firing Pin Spring • 18lb Reduced Power Spring • Mag Catch Spring • Sear Spring