For Security Reasons edit war As I said in my edit summary the term For Security Reasons is ambiguous and not properly established in the source Further it is unnecessary You d have to have a crystal ball to know why they did it and as I said earlier Janes is not perfect The reason that all the other MG manufacturers alter their parts so they don t interchange is because the US BATFE makes them do it Suddenly Glock is different Yeah I guess that s just like Glock compensated pistols not acting like any other compensated pistol I wonder if they actually shoot bullets