Home Forums Hunting & Shooting AR and Tactical Rifles Scope my AR15a4

I think the A4 is a 20" barrel? I'd lean towards the heavier side like an SWFA fixed 10x or fixed 6x depending on how far you plan to shoot.

On my carbines, I have an SWFA 3-9 on one, a 1-6 Fire dot and on red dot on another. They all serve their purpose. If I had to choose one it'd be the vx6 1-6 fire dot on a carbine and an SWFA 3-9 on a rifle.