Kinda like the small recoil spring retainer? The first time I undid the barrel bushing thing, that thing shot out 20 feet across the basement.
Recoil spring plug, yeah. Those things can, seriously, break your teeth.
Get yourself a nice fat nylon bushing wrench, the kind that traps the plug for a little bit of arc as the bushing moves aside. Other advantage of the nylon ones is that they're non-marring.



















































