All Maxa Beam Searchlights have a field-replaceable Xenon short arc lamp and lens. These kits contain everything needed to perform maintenance on your searchlight. Universal Lamp and Lens Kits are compatible with all MBS-410, MBS-450, and MBS-430 Searchlights with standard or spyder lenses. For complete, detailed instructions on how to replace a searchlight's lamp or lens, please see the Instruction Sheet that ships with each Replacement Kit. Universal Lamp Replacement Kit Compatible Models: MBS-410/430-* Searchlights with Spyder Lens; Legacy MBS-410/430/450 Searchlights