annihilation-time
MOLON LABE
If you'd like a low profile gas block, and you're capable of changing out gas blocks. You should be able to remove the Ruger design. Chop-off the front sight and reinstall.Some one on another forum has pointed out that the AR556 has a non standard gas block. Quote:
"the Ruger gas block has the pins on the top and not the bottom. If you want a different gas block, then you will need to have the services of a gunsmith, which kind of kills the great price."