DIY Chargeable Ballistic Chronograph Premium Precision Bullet Shooting Velocity

1set x Chronograph. Speed Record: 40 group. Function is more abundant. Detail Image. Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Other accessories demo in the picture is not included.
1set x Chronograph. Speed Record: 40 group. Function is more abundant. Detail Image. Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Other accessories demo in the picture is not included.

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DIY Chargeable Ballistic Chronograph Premium Precision Bullet Shooting Velocity