description the integral spring bottom metal latch of the presently disclosed invention represents an improvement to prior art bottom metal latches and corresponding floor plate systems the integral spring bottom metal latch of the presently disclosed invention includes a spring that operates as the primary resistance to the release of the floor plate or magazine in the bottom metal assembly the bottom metal assembly is the trigger guard and magazine system in a bolt action rifle by integrating the spring into the metal latch assembly the spring may exhibit higher strength than compression springs as found in prior art floor plate systems the integrated spring too may be tooled and manufactured to address the specific recoil requirements of a specific rifle design the presently disclosed integral spring bottom metal latch may be utilized in both a hinged floor plate and detachable box magazine design fig1 illustrates an integral spring bottom metal latch system 100 in a rifle with a hinged floor plate the system 100 of fig1 includes a latch body 110 having a through hole and movement arm 120 the system 100 of fig1 also includes exposed button 130 and a thin webbed integrated spring 140 the spring may be curved straight tapered or reverse tapered the spring may be one piece or multiple components having different lengths and different tension the spring may also be parallel or of a convex or concave configuration the spring may be integrated or attached to other components in an alternative embodiment the spring may be of a cantilever design system 100 also includes a catch 150 that holds the floor plate 160 in place when the button 130.