Abstract: A toolless slide backplate for a firearm that comprises an extractor lock and a striker assembly lock. The extractor lock is dimensioned to cover and contact an extractor plunger when installed, and is held in place via an interplay with the extractor plunger. The striker assembly lock is dimensioned to cover the striker components when installed. The striker assembly lock covers the trigger connector of the frame of the firearm such that a disassembly opening is not required.