I have 2 different uppers that see use for long range fun & hunting. Both have SS 3x9x42 FFP MilQD reticles and both are in SWFA mounts
I really like the milqd reticle from swfa. Lots of room in the erector and both of mine have been twisted and turned and they move spot on.
I have a stock pencil barrel with irons and another with Aimpoint Patrol.
IMO for self defense NOTHING beats irons.
Randy