Top 10 Dangerous Automatic Machine Guns A view of an M249 5.56 mm squad automatic weapon (SAW) with a 200 round box of ammunition attached. The SAW was adopted by the Army and Marine Corps in 1982. Posted by faren in Tweet Leave a Reply Cancel reply Your email address will not be published. Required fields are marked *Comment Name * Email * Website Prove You\'re Human * nine − = 7