Id just clean the barrel out with solvent and a good bore brush. run some patches down till it comes out clean then lighly oil. open the action and inspect it for anything out of the ordinary then clean it up. qtips are handy soaked in solvent, then some in oil (lightly). cycle the action and if it feels smooth you should be good to go. run a solvent soaked wipe over all the metal followed by one soaked in gun oil. use some furniture polish on the wood and clean it up. buy some ammo and take it out and shoot it. should take about 20-30 mins to bring it back to life. enjoy.