Howdy, this is my first post. I hope it’s in a good location. I have a rock river arms predator pursuit. 20” heavy barrel, A4 upper, A2 buttstock. 4-16 scope The rifle shoots great! But I never use it because it’s heavy. It's not great to me to carry in the field, so I want a lighter, shorter AR. I think I want a 16” a4 with a collapsable stock and a light scope. I don't know if I should buy an upper and a stock or buy another AR. I don't know what uppers are compatible with the RR, and there are so many makers who is decent. I did order a 16” complete M4 AR blem. from Palmetto.
thanks for any help / advice