The present invention relates to the cover of an M16 rifle, wherein a safety cover is detachably mounted on the ratchet of the M16 rifle so as to reduce impact when the knob is hit by a human body, . Further, the cover of the M16 rifle of the present invention is advantageous in that it is simple in construction and easy to manufacture. The scoop cover of the M16 rifle according to the present invention is fitted to the scoop 11 of the M16 rifle. The upper edge of the scoop is formed into a triangular shape with rounded corners, and a space 24 is formed through the lower opening , A body 21 made of any one of a soft synthetic resin material, a foamed rubber material, a silicone material, and a plastic material; And an elliptical or circular shape is integrally formed on the inner side of the space portion 24 so as to be integrally protruded from the body 21 and spaced apart from each other by a predetermined distance and the body 21 is connected to the latches 11 And protrusions 22 and 23 inserted into the side holes of the latch 11 of the M16 rifle when inserted into the side wall of the latch 11.
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