Ive had this 6920 for about 3 years. Had Adco cut the barrel down to 10.5 and just got my stamp back the other day. I shoot a ton of .22lr with a cmmg kit through it. Stamp took 3.5 months door to door. I have an Eotech XPS on the way to try on this rifle until my Lage Max-11 upper gets here for my M11/9, in about 2 months, which the Eotech will host.
Maid, CTR, DD Omega 7.0, MBUS Gen 2 rear
Super light and is a very fun gun to shoot. I rarely have any issues with the SS Evolution CMMG kit.
Steve, Nice work. 
Nice SBR. Is that a Daniel Defense Rail?
Any issues with cycling? And did you upgrade the buffer at all?
I’m wondering the same thing Javelin is, I hope you went with a different buffer. Also, how long did it take to get your barrel from ADCO? I’ve been looking at sending them one of mine soon, getting it profiled though, not cut down.
Awesome work by the way!
Thank you sir
Zero issues with cycling so far. I asked Adco to open the gas port to .093. Using the same buffer. No issues.
Thanks. Yes it is the drop in Omega 7.0. I wanted a thin profile rail which this one is also extremely light. Works very well for me.
Adco had the work done in 1 day. Shipped it out the day it was finished. Very clean work. Would definitely use again.
Steve