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What spare parts should one keep on hand or should have when owning this platform of rifle???
Extractor
Firing Pin Spring
Gas Piston
Gas Piston Rings
I keep spares for a rebuild just in case I want to return it to a safe queen.
I keep a complete bolt, rings, piston, firing pin. I've only seen a broken extractor on a training carbine & it was a DI. YMMV.
Check! Two spares! 😬😬😬🤣🤣🤣a complete spare MR556![]()