Ok, so I was digging through my pens, and found some brushed stainless pens that just happen to match my 901 and the top fits perfectly over the end! Kinda cool how well it matches.
I'm not going to keep that on there, as it makes it long and unwieldy, and it covers my LED.
I'm not going to keep that on there, as it makes it long and unwieldy, and it covers my LED.