Welcome aboard and as PSP
has stated, they are very good guns. I have owned three and all gave super performance. They are also very easy to field strip and clean. Yes, the 59 mags will work, as you don't have the DP51C. Have found that some of the 59 mags, will feed just fine but not lock back, on the last round. If the price is right, grab it.
The use of the try action, is a learning experiance.
Be Safe !!!