Yup.
Take off your pistol grip, pull out the safety detent plunger spring, and the safety detent plunger. Use sandpaper or a fine file to VERY SLIGHTLY round the tip of the detent plunger.
Pull out the safety selector also. You'll see the track and detent holes that engage the plunger. Use a round file to very slightly radius the edges of those holes on the track side (you could do it with an engraving point in a dremel, but I use a round file). That'll let the plunger ride more smoothly, make it easier to click the safety on and off, and help you operate it more quietly.