First look at Boyi M4 S-System BI-3581

Today we will show you the latest M4 AEG, Boyi 3581 and 3681. We were talking about BI 3681 from the last post. These two models are the best yet so far from chinese airsoft manufacturers. These two models features full metal body, 300-330 fps 0.2g bb, 7mm bearing and reinforced gear box, S-System fish bone rail. First we look at the box; very nice look box with nice packaging similar to ICS packing. Package comes with 1100 mAh 8.4v battery, charger, 3 point sling and T-Handle, external battery case, small big of BB, high cap magazine 300 rounds, cleaning rod and user manual.
Boyi is well known with nice finishing, no exception on this BI 3581; this package come with Full Metal Body, black sandaled metal finsih. Very realistic metal feeling overall. Metal barrel, metal foldable sight, metal s-sytem fish bone, etc... all the parts that needed to be metal, boyi made it meal. :)

to be continued ........ tomorrow....