i didn't get the plus package. I didn't see the need for the type of shooting I do. Also,I don't think I needed any full-auto capable parts in CA (m-16 bolt carrier and m4 feed ramps) and didn't need to pay more for the 4150 barrel. I assume that the standard barrel material is 4140. It has a little less carbon content...meh.
Getting the CA Compliant model added almost $200 to price when compared to catalog.
I agree with the accuracy. It needed two 1/4 clicks of elevation at range to zero and has yet to FTF or FTE. It is fun to shoot, is smooth, when no brass or gas coming across my face. This is my first left handed gun. I have only shot about 300 rounds through it but it likes: PMC FMJ, Federal FMJ, Fiocchi FMJ, and Remington Pointed Soft Points (all 55 gr).
Each time I cleaned it (3 times now: initial cleaning and two range trips), I was surprised on the ease of cleaning.