Springfield Integral Locking System

Roland Thunder

New member
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
 
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.
 
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