Aero epc build - JP Enterprises EnhancedBolt 9mm AR Bolt Carrier Group (BCG) Kit - JP Short Silent Capture Spring

Flawless!

I built an Aero EPC 9 ( 8.3in)with jp bolt and Scs( 2 steel + 3 tungsten). The only other non aero parts I used was a rise armament 9mm fcg, radiant raptor charging handle, and radian ambi 45 degree safety selector.
This set up ran like a champ, no issues at all. Assembly was a breeze, other than one small issue. Aero epc lower uses set screws ( not pins) to hold down action lever and rear take down dent+ spring. Clever design, no springs flying out when you take the end plate off.
There was a set screw for the bolt action lever but the one for the rear dent was missing, I just ordered off of Amazon, it's a 4-40 x 1/8th set screw.
The jp bolt + scs work very well for this set up with over 1k rounds fmj , hollows, different grains ... no problem. The lrbo works too.