16" dti pencil barrel with mid length gas system,car buffer, not sure what spring, or if gas block was drilled. Right now it cycles everything and throws brass to 4 o'clock. I was comparing it to a tc venture and felt recoil was more with the ar but it seems to be from the bcg opening. When i charge the riffle it slams shut which is good but it seems harsh even though the riffle is pretty light.
This is my first ar and has a double star lower so maybe it is normal but i think it can be better.