Originally Posted by
RetroRevolver77
I ran tons of 5.45 through one particular Arsenal SLR 105, my favorite rifle of the rifles I own with easily 20K plus- maybe close to 25K rounds through it. I could still hit 6" steel plates at 220 yards last time I had it out running it with a 4x Russian optic off the bench. I've heard you can get upwards of 35K on semi auto as long as you don't run them to hard- which I never do. Plus side is I bought into the 5.45 ammo back when it was cheap so the cost savings alone on ammo pay for the rifles which eventually get re-barreled if needed.