The Army has announced that it plans to give gun makers the opportunity to build 6.8mm prototypes for the service's effort to replace its M249 squad automatic weapon and M4/M4A1 carbine. The release date of the much-anticipated Prototype Opportunity Notice, or PON, for the Next Generation Squad Weapon program "is currently estimated to be January 2019," according to a draft PON. Read more in this Military.com story.