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Kevin, no, this model does not have the "Mainspring Housing" Lockout.

The Springfield sight does not state that it does or does not have the ILS the TRP 10mm I handled and shot did have the ILS system It can be changed out by changing the main spring housing, mainspring cap, main springe retainer pin a and mainspring spring. I recommend calling springfield to se if the ILS in on this gun Call 1-800-680-6866

Hi Kevin, no, this model does not have the "Mainspring Housing" Lockout.