This is my AR15 SBR with CMMG .22LR conversion kit installed. 7.5" barrel, 1-7 twist rate with my Form 1 silencer installed. Vortex Strikefire green dot scope. I was worried that the short barrel and extreme screw rate would create havoc & result in knuckleballs downrange, but it shoots with reasonable accuracy.
It is a fun little rig and I will use it as the next step up for my grandkids graduating from BB guns. Light, quiet and unintimidating. The CMMG conversion has been running flawlessly. Wish I had bought it years ago, but the recent return to cheap and available .22LR ammo pushed me into it.