Guarder Oil Temper Spring for AEG

The Guarder AEG Springs have an oil temper finish for optimal performance.  There are various grades of strength from 100 to 150 for varying FPS levels.  These are the best AEG springs on the market!
SP100 – 320 to 340 FPS

• SP100 – 320 to 340 FPS
• SP110 – 340 to 360 FPS
• SP120 – 370 to 400 FPS
• SP130 – 400 to 430 FPS
• SP140 – 440 to 470 FPS
• SP150 – 470 to 500 FPS