SHS M110 Spring

Good spring but where I want to mark it off is either with SHS' description or Clandestine Airsoft writing it. My compression is TOP NOTCH and this spring gets me around 330 (as it should: M110, 110x3[this is in meters not feet]=330fps. So be warned. Though with a tight bore I cranked it from 330 to 360, so good FPS for no extra gearbox wear!