M16A3/M4A1 Service Rifle Qualification Practice Test

The appropriate action to take for a stoppage that has caused the bolt to be locked to the rear is to insert a filled magazine, pull the charging handle, and then sight in. This procedure is crucial in resolving the stoppage efficiently.

When the bolt is locked to the rear, it typically indicates that the weapon has fired all of its rounds in the magazine, leading to a failure to feed new rounds into the chamber. By inserting a filled magazine, you are replenishing the ammunition supply. Pulling the charging handle then allows you to chamber a round from the newly inserted magazine and return the bolt to a forward position, readying the weapon for shooting.

After this process, sighting in ensures that you are prepared to engage your target accurately. This sequence is critical during training and operational situations, as it addresses the stoppage quickly and effectively.

The other choices do not provide the correct steps for dealing with a bolt locked to the rear. Pressing the trigger while the bolt is locked would not resolve the situation and could lead to further complications. Removing the bolt and cleaning it is unnecessary and time-consuming, as it does not address the immediate issue of the bolt being in the rear position. Checking safety and reloading without addressing the stoppage is