I finished a build for one of my co-workers today, I built a lower for him about a year ago and he's been trying to decide on an upper since then. He ended up with a Palmetto State Armory
16" Stainless middy upper and I sold him the Spikes 12" BAR I bought for my build but changed my mind mid build, I stripped his upper down today, swapped barrel nuts, cut and ground his A2 sight down into a low profile gas block and re-assembled everything into this
I'm not sure what his plans are for optics but if it was me I'd slap a 3-9 on it and go blast some squirrels