This detachable box magazine conversion fits the Weatherby Vanguard and reduces rifle weight by 0.25 lbs. Drop-in fit, includes the floorplate, spring and trigger guard with detachable box magazine, which holds 3 rounds. Polymer construction. Only for use in standard long action calibers including the 25-06 Rem, 270 Win and 30-06 Springfield. Not for use with other magnum calibers. This kit also fits the Howa 1500 long action.