Hey Sparky 63!
Did you figure out a solution.
I purchased a brand new MDArms 20 Rnd drum from Saiga12.com. It arrived broken with the tabs that hold a retainer pin on the rear broken off.
I contacted both MD Arms and Saiga12.com via email and received no responses. Been 2 weeks. I really don't have the funds to pay for shipping back. sigh...