What about the 5.56mm milled RPK rifles? I found one for sale, thinking about buying it to go with my SLR107CR. When were these made? What is a good price? Are there any good mags that hold more than 30 rounds? Are these accurate? Iām thinking that the heavy barrel and the 5.56mm chambering will have more potential for accuracy than my stamped 7.62. Also, do these exhibit feeding issues? Thanks! 