The U.S. Special Operations Command last week awarded a contract for suppressed uppers from Sig Sauer in an effort to upgrade M4A1 rifles.
The five-year, $48 million firm-fixed-price contract issued through USSOCOM headquarters at MacDill Air Force Base, Florida, is for an undetermined quantity of what are termed Suppressed Upper Receiver Groups to mate to M4 lowers.
The on-again/off-again SURG program has been around for the past few years in an effort to produce a weapon system designed to be suppressed continuously with better thermal characteristics and less blowback that simply adding a suppressor and threaded barrel to a standard upper.
While it is not known which upper SOCCOM selected from Sig, the company earlier this year released details on its planned SUR300 suppressed .300 BLK upper that uses a 6.75-inch barrel with a permanently attached Ti suppressor that incorporates 19 baffles.
According to the Pentagon, the majority of the work on Sig’s SURG program will be performed at their Newington, New Hampshire facility, and is expected to be completed by July 2023.