Are you asking about the mainspring or recoil spring??
18.5 is a standard recoil spring..but the mainspring is in the housing in the grip and stock is usually a near a 21# with a 19# for light triggers.
If you are talking about the recoil springs, it really depends on how light a load you are talking..they come as light as 7 pounds.
18.5 is a standard recoil spring..but the mainspring is in the housing in the grip and stock is usually a near a 21# with a 19# for light triggers.
If you are talking about the recoil springs, it really depends on how light a load you are talking..they come as light as 7 pounds.