Steven, depends Wich Omega your referring to. If you're talking about the et arms Omega AR-15 alot of ARs and rifles in general don't come with sights anymore because the manufacturer expects people will upgrade them anyways or use a scope. So it's a way to lower cost/price for the customer. If you're talking about the cz Omega pistol then that's definitely weird and would be a pretty bad manufacturers error. Roughly 50% of the rifles I've purchased recently have no sights from factory. If you post again with the model can let you know if it should have came with sights or can recommend some. Sorry but hope this helps.