Seals and other special forces have the opportunity to carry whatever they want. Seals have carried HK, Sigs, Glocks ect. Look at the HK SOCOM built specifically for Special Operations. They don't carry it every mission but its available if they want it. Personal Preference and needs of a mission dictate what they use. All are great firearms that are capable in a combat enviroment. Lastly, The perk to being in special ops you get whatever you want usually.
Sigs have been around in the Army since the early mid 90's. CID had them, my former SOCOM Avn. unit had them. I've carried the 229 & other models in civilian LE. They're very good weapons.
Yes, CID, certain intel positions, and, I've been told, certain females whose job required a handgun and couldn't grip a 92 were issued Sig 229's. I even saw a crack troop in the mess hall on Victory with an M16A2 with an M4 stock one time.
