When working in a building during an inspection or going around a corner, most fighters lay down their machine gun, which is due to the position of the body and the desire to minimize the silhouette in case of sudden enemy fire; In this case, aimed fire becomes almost impossible. Combined with the stress of working with vertical cover, this position sometimes leads to shots into cover due to incorrect elevation of the line of sight above the bore axis. To maintain the ability to conduct directed fire, insertion into the other shoulder is required, i.e. a shoulder shift, which presupposes the presence of trained skill. There are two options for shoulder replacement: without replacement of hands and with replacement of hands. Both options allow you to change the direction of fire; One runs faster, the other takes longer. A shoulder switch without a hand switch is more often used to temporarily change the shooting side, such as when quickly looking to the opposite side of a hallway while checking a corner. A shoulder switch with a switch of hands is used to switch fire side during prolonged work and due to the longer execution time is often suitable in safer conditions, such as in a shelter or before entering a room.
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