Post the HK stamp... Some early plastic did come in green some came gray most came black
I remember when I sold Washoe county SO a HK G3 post sample and it had green plastic the sheriff called and wanted to send thè rifle back. but I brought over a black set and swapped him out at no charge as he had waited several months for the transfer to be approved by BATFE...
Get this he didnt know the hk's plastics came off with quick pins.... No experience with MG's what so ever...Kinna scary that people like that have mg's huh..