Hi Miles, on the safety bar, and also the coupling link and also the firing pin retainer, you might get the grayish look you want with a little surface prep and maybe some very dilute muriatic acid, (pool acid?) I use it only because it is available everywhere, but, never the less, remember the golden rule,.... AAA (ALWAYS ADD ACID!) to water to dilute... NEVER EVER add water to acid!!!! OOOOhhhh, oh crap! this will never heal! type of burn if you get it wrong.... best to you, til...latr'...GT.....
