Unfortunately not, I was so into it that I didn't stop to take pics.
But you're right, I did a primer coat and a satin black coat (or two) & let that harden for a couple of days. Then, using a flat ½" artists brush and a paint mixture of gunmetal grey and pewter I dry brushed it.
I had a piece of cereal box card at the side of me, dipped the tip of the brush into the paint and then firmly ran it over the card until there was hardly any being deposited. Then, gently brushing the remaining paint over the areas that would potentially get worn, the colour slowly builds up. I never try to complete an area in one go as there's so little paint on the brush that a few strokes later you need to reload.
I used the same technique on the scope but using metallic brass paint. As I was doing it I noticed a little chip in the black paint on the main scope body, so I turned that into a scratch using a finer artists brush. You can probably just make it out on the photos.
The grip had the same satin finish as the rest of the blaster, but rather than mask it all off & paint it gloss, I just got out the T-Cut and buffed it to a shine for that plastic look.