Primary arms had Balstic Advantage 16" barrels on sale for black Friday. I wanted a shorter barrel anyway. I replaced the factory 18" today. Glad I had a midlength gas tube on hand. The one from Armalite that was on the Palmetto barrel was about an inch to long. Pics and range report tomorrow.
95 yds 8 shot group the flyers are my fault.
Looks like it’s a hell of a good set-up!