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Keep It Original. SureFire offers the Z91 Mount Parts Kit to provide XC1-A and XC1-B handgun WeaponLight users with genuine OE replacement parts. There’s no need to source poor-quality or misfit parts for your XC1-A or XC1-B. SureFire has you covered! Every Z91 mount parts kit includes the following user-replaceable parts:
Note: Not compatible with the XC1-C.