SB396 by Democratic Sen. Loni Hancock of Berkeley was placed on the inactive file Thursday, a day after it failed to gain enough votes to pass the Assembly.
The legislation is among a slate of bills pushed by Democratic lawmakers this year to tighten gun and ammunition laws. Several have passed both houses and are on their way for Gov. Jerry Brown to consider.
State law already prohibits the sale, gift and loan of large-capacity magazines that hold more than 10 rounds.
Hancock's bill would have forced gun owners who already had such magazines to dispose of them by July 2014.