I saw somewhere, a pair of Channel-Lock pliers being used to re-install the recoil spring assembly.. That seems to be fairly straight forward.. But, as a "Certified Tool Nut", I would like a ''special tool'' for that...
But, that would lead to the next thing ! A special tool for the replacement of the small captive recoil spring... For that , the assembly must be returned to the Factory for a replacement spring... Oh well, we must accept limits !