Avoid M1 Thumb!!!!  Lower the
bolt doing a controlled release as
shown here.  Hook the heel of
your right hand against the
operating rod handle.  While
exerting rearward pressure on the
handle, push the follower down to
release the bolt.  Now the bolt
cannot fly forward as your right
hand is holding it back.

Simply pressing the follower with
your thumb, without holding back
the op rod handle, is a sure way
to get your thumb mashed!
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