That bushing would have to be an after market modification.I purchased a B14 hmr 308 one month ago.
The bolt does use the allen wrench for firing pin removal. it works,
also bolt face has a firing pin bushing.
New rifle, maybe a Bergara modification.That bushing would have to be an after market modification.
I am 47 now! LOLWow, way to disparage the over-the-hill-gang. If you live long enough, 50 won't seem old.