As an Amazon Associate, we earn from qualifying purchases. OS Engines GT15HZ Gas Helicopter w o Muffler | Horizon Hobby OS Engines . OSMG1915 Gallery Attributes Brand name, Manufacturer name, ManufacturerOS Engines Extra Product NameOS Engines GT15HZ Gas Helicopter w o Muffler | Horizon Hobby moq, multiple, tierMinQty11 MPN, SKUOSMG1915 qtyInStock0 tierPrice1749.99 Distributor offers SellerSKUMOQIn stockMultiplePrices horizonhobby.comOSMG1915111 @ $749.99