Originally Posted by TWR
Exactly which gas block will be used?

Just for clarification on the longer rail and some ideas, this gun is close to what Blue was suggesting. It's got a dimpled low profile gas block under the 15" MI hand guard. It's a Sionics 16" pencil barrel with mid gas and if you look close, you can see the gas block is behind the light. Now picture an exposed railed gas block on the same mid gassed barrel and your rail must now be behind the gas block. That's gonna leave 8" of exposed barrel and flash hider and only 9" of rail space to mount a light and your support hand.
[Linked Image from i.postimg.cc]
Yes there are other options for a light but a longer hand guard just makes the most sense.


I like that a lot.