Springfield Integral Locking System

[Roland Thunder]

How can I tell if my Springfield Armory 9mm Government Model 1911 has the Integral Locking System (ILS). The model I have is the Loaded Target model

 

[9x19]

Should be pretty obvious on the main spring housing. If there is a little round disk in the back of the MSH, just below the grip safety, that's part of the ILS.

 

[Roland Thunder]

Yes, mine has the ILS