I suggest anyone with an APS pistol reads this !
I have put through around 15 bulbs so far and keep up the servicing very well but I began noticing a very metallic sound in the slide on each shot.
I stipped it down and found a problem!
On the inside of the front of the slide there two small round rubber bumpers fitting into holes, as the slide flys back it hits these bumpers but the rubber are now destroyed so the slide has been damaged from hitting the aluminium !
I suggest everyone has a look at theirs and replace the bumpers regularly.
The rubber seems to be appox. 2.5mm dia and 10mm long.
I going to get some o ring cord and make myself a heap and change the very regularly from now on.
Here are the photos with the bumpers removed you can see the damage caused.