The gun crews weren't permitted to strip the buffer although we did teach them how to take the butts off and grease the return spring tube. That's why the Armourers would almost automatically, out of habit I suppose, just test the buffer every time he encountered a Bren coming in. You could just feel the graunchy ones that needed stripping down.
Almost forgot to say that you'd occasionally get a buffer plate that had cracked right around the centre hole. Stripped a few of them in your time Tankie and Skippy?