Awesome pistol upper - Stern Defense AR-15 10 inch Assembled Upper Receiver, 8.5 in 9mm Barrel w/MLOK Rail

Quality build and flawless function. Handguard is just plain cool looking. Blast can is effective, much less noise then my other 9mm pistols (at least for the shooter) Accuracy seems ok but I have just been shooting standing unsuported. Paired with Stern Defense beretta magazine adaptor and couldn't be much happier unless they came out with a dedicated lower that took beretta mags. Just a blast to shoot