Thanks hso. I was checking out youtube and it looks like the AK drum mags that open in the back are the way to go. Looking at my cheaper than dirt catalog the price for an AR double drum mag [beta c mag] is a bit expensive for me at the moment. In the cheaper than dirt mag it shows reviews favor the AR-15 drum,loading tool [mag-055] over the AR-15 double drum [mag-056]. But I like the price of the mag-055. Maybe I should start saving my pennies. Also, the mag-056 looks better. Plan on going to a gun show this Sat. so I will keep my eyes open for all three.