This is what I have to work with for my first carbine course. A Preban Bushmaster XM15-E2S CAR15. I put in a BCM buffer tube, heavier spring and plug, some MagPul furniture, and a sling attachment point where the buffer tube meets the lower. I know it is not ideal, but it is what I have on hand.
Is there any way to "appropriately" mount an Aimpoint Micro T-1 or Comp M4 on this kind of setup? Can somebody recommend a basic 1-2pt sling for this rifle to be used for my course? I was contemplating registering this lower as an SBR and then buying a nice new 10.5in upper to run with my suppressor, but is it worth doing to a bushy lower?