OX Mainsprings for Airrifles and Pistols Check Your Spring Size::No7 - ASI Sniper, Magnum (and all other ASI models) Diana 79 and Gamo - 3/8" models feature double

- 3/8" models feature double side screws

12mm High Density Padding

- Field of View: m @100m / yds @100yds 13 - 4

- Length: 322mm / 12

Push Switch

OX Mainsprings for Airrifles and Pistols Check Your Spring Size::No7 - ASI Sniper, Magnum (and all other ASI models) Diana 79 and Gamo - 3/8" models feature doubleDescription The World's NO. 1 square spring. The perfect replacement or upgrade for standard mainsprings. Warning replacing your air rifles mainspring may increase its power making it illegal. Redbeck Shooting Supplies would recommend that you seek manufacturers advice or a professional gunsmith before attempting to alter your rifle, and that you always check your rifles power using an accurate chronograph to ensure you stay within the law. NO1 FITS