[Slow]

Fairly bigger then a 74u. I believe its a 102.
Also i believe that is a custom made foregrip. Iv seen some of those around but most of them were made by hand.

Also as i said in the AK Media forum. Sand down the previous stain and wear a mask. The stain contains lead so you dont want to breathe that in.

Steps:
1. Sand down grips
2. Wipe down grips with cloth
3. Pre Stain
4. Wipe down with cloth once dry
5. Apply Stain coat
6. Wipe down with cloth once dry
7. Repeat Step 5 and 6

Continue staining til your desire darkness is reached.