AR9 16” Upper w/ Stern Defense Adapter

RTB PCC upper, RTB 9mm BCG, Kaw Valley 16” 9mm barrel, Expo Arms 10.5” mlok rail, Stern Defense Glock mag well adapter, FM Products 6.5oz 9mm buffer, extra power carbine spring, and 5.5oz carbine buffer with Spikes spacer.

Fired a couple hundred rounds thru this set up without issues (I used Glock OEM mags). I also had no jams with some 124gr Gold Dots. The Stern Defense adapter works with Glock mags and has last round bolt hold open.

$350 meet in Chesterfield Twp area, will ship for extra. No trades.