AR 15 pistol, 10.5" barrel, 5.56

[Thorstang6]

Looking for an AR 15 pistol chambered in 5.56 with a 10.5 inch barrel. Also looking for an AR 15 pistol chambered in 300 blk
Also looking for 5.56 or 223 ammo and 300 blk ammo
Pm me