I built 3 ARs just the same for my Son and Son-In-Laws, they are 20" Heavy barrel, flat top, with scope, free float tube & have a vertical grip bi-pod that can be attached. I laid the bi-lod in the picture, they also got 2 mags, 100 rounds of 62 grain blastic tip ammo and a camo gun case.
The second photo is one of my son-in-laws with his, I took all three of them shoting. This son-in-law shot a 20 round group as fast as he could get back on the target at 100 yds about 2". He was impressed with the rifle.
Oh I also sent off the trigger groups to Bill Springfield for his trigger job.