Nine Ball Custom Lower Frame RR 5.1 For Marui Hi-CAPA Rear Sight At the end of the

At the end of the barrel the air will pass the BB and come out first and when the BB comes out of the barrel

9g" which reduce the weight pressure on your slide

It can effectively hold the chamber to the frame tightly and lock the wheel on preset position to prevent loosens

Knurled thread protector

Nine Ball Custom Lower Frame RR 5.1 For Marui Hi-CAPA Rear Sight At the end of theFits For Hi Capa 5. 1 & Gold Match GBB Pistol Lower Frame with lightweight and high quality, made of aluminium die cast. Under rail is integrated with Lower Frame and slim shape. Reduce about 58% of weight from original (5. 1inch Lower Frame). Super light weight 61g.