It is empty inside. It is able to filled with BB or sand to increase its weight.
It is capable of storing about 620 BBs.
Adapt to Molle system. It can be removed quickly.
It is able to disassemble according to your needs.
Use Instruction:
① Open insurance clip
② Pull out the insurance pin
③ Open bumper
④ Unscrew the head part
⑤ Remove the gasket
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