"Guns" is a nickname for which muscle group in the human body?

The nickname for the muscle group in the human body that is called guns is the biceps. It is a muscle on the front part of the upper arm. The biceps includes a “short head” and a “long head” that work as a single muscle. The tendon that attaches the biceps muscle to the forearm bones (radius and ulna) is called the distal biceps tendon.

Physicians and other health care professionals tell us that from its origin on the glenoid, the long head remains tendinous as it passes through the shoulder joint and through the intertubercular groove of the humerus. Extending from its origin on the coracoid, the tendon of the short head runs adjacent to the tendon of the coracobrachialis as the conjoint tendon. Unlike the other muscles in the anterior compartment of the arm, the biceps muscle crosses two joints, the shoulder joint and the elbow joint.

The biceps is one of three muscles in the anterior compartment of the upper arm, along with the brachialis muscle and the coracobrachialis muscle, with which the biceps shares a nerve supply. When the biceps contracts, it pulls the forearm up and rotates it outward. Accordingly, based upon certain muscle movements of the biceps and some basic characteristics of certain guns, biceps have frequently been referred to as guns.