PM? Sound a bit like MP? Getting the idea?
High quality, full metal sub-guns, recently a great favourite of the Chinese clone makers, and with very good reason.
If you want the best, buy the original - G&G
G&G PM Series
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G&G PM5 A4 Airsoft SMG - Starter Kit
340+ FPS | Electric (Battery)G&G ArmamentRegular Price £228.95 Special Price £169.95