Thanks for the tip.

Any general comments about CMMG?

I'm actually tempted to just order an upper.

CMMG 16" M10R Upper
Price: $525.95
Receiver: A3
Bolt and Carrier Group: Semi-Auto Carrier
Both and Carrier Group Upgrade: No bolt group upgrade
Charging Handle Upgrade: No charging handle upgrade
Feed Ramp Option: Anodized Ramps
Sight Post Option: A2 post
Front sight base / Gas Block Option: F Marked Front Sight Base
Forward Assist Option: Round forward Assist
Handguard Option: LaRue rifle length handguards (+$280)

Any upgrades or options suggestions? Different gas block? Extended / polished ramps?

Mike