Watch the review for the Brownells BRN-180 upper receiver group for AR platforms.
Some additional details I did not put into the video:
.223 Wylde chamber supports .223 Rem and 5.56x45mm
16" barrel with a 1/8" twist
Compatible with folding stocks
Developed in conjunction with Primary Weapon Systems
Mounted on a Mega Arms lower with a Geissele SSA-E trigger
The folding stock adapter is a Law Tactical Gen 2
Accessories:
Aimpoint H1 on ADM lower 1/3 mount
Centurion Arms Diopter sights
Magpul M-LOK hand stop kit
SureFire WarComp
SureFire M600
