I have a few AR lowers and thinking that I want to build a SBR. I have 3 ARs in 556, 300 BO 16", a pistol 300 BO with a 10.5" barrel and 16" AR9.
If you were looking to build a SBR, what caliber would you be looking at?
If you were looking to build a SBR, what caliber would you be looking at?