Discover the finest O Gauge and O Scale model trains, perfect for collectors and hobbyists seeking durable, high-performance three-rail layouts powered by reliable AC operation. Whether starting a new O Scale layout or expanding your O Gauge collection, these model trains offer lasting quality, realistic detail, and hours of enjoyment for both beginners and seasoned railroading enthusiasts.
Shop top brands like Lionel, MTH, Atlas, K-Line, Weaver, and Williams. From Prewar model trains and Postwar classics to MPC-era favorites and modern O Scale and O Gauge trains, browse collectible and ready-to-run O Gauge train sets at competitive prices. Don’t miss our discounted clearance O Gauge and O Scale inventory, all in one destination for quality model railroading.
Trainz carries model trains from multiple O gauge manufacturers, including Lionel, MTH, Atlas, 3rd Rail, Weaver, K-Line, Menards, and more.
Search our site to find O gauge steam locomotives, diesel locomotives, and electric locomotives. We stock O gauge passenger cars, freight cars, operating cars, and motorized units.
Trainz offers O gauge transformers and controllers including the famous Lionel ZW, TMCC, and Legacy systems as well as MTH Z4000 and DCS units and more.
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