Nope. Tried that, and was dissapointed.
Tried ones from Blackhawk / Eagle as well. Disappointed in them too.
The best, by far, is a rigid adjustable cheek rest. I wasn't the biggest fan of the M3A type at first, but it's grown on me. Except for the rubber mouse pad type neoprene coat. That needs to be redone.
FWIW
-Bravo