The big issue is the matching numbers. They can either be matching from the factory or force matched matching from a variety of country's rearsenalling programs. Some force matching is easy to spot, some not so easy. Vopo and Czech reworks are often sold as 'matching' but more often than not, have some replacement parts that are force matched to the rifle. As Coyote and Nabs said, pics would help us nail down which type you have.