Outdoor Gas Fire Pit Components & Parts. Complete Custom Fire Pits. Gas Fire Pits. We have everything you need to build your own backyard outdoor Gas Fire Pit in Natural Gas or LP, liquid propane. Not sure where to start? We specialize in the DIY "do it yourself" custom firepits and gas fire pit parts. We also offer complete Handcrafted Custom Stone Gas Fire Pits & our Beautiful Contemporary R & R Living Gas Fire Pits in our exclusive metal finishes.