depends on how far you're expecting to shoot. if only out to 500, 600, then might not be worthwhile, you're not going to run out of elevation adjustment on your scope. if out to 1,000 or more, then probably worthwhile.
With a larger Variable scope like the 4-20 you mentioned, there is really no reason not to. Can't really think of any disadvantages to a 20 MOA mount. Barrel clearance on an AR will be no problem. The only time I don't use them is for LPVOs because it can put the barrel in the FOV at
Wait time on the barrel? It was some shenanigans with Bartline and my daughter. I had different plans for a bolt gun and they went down this rabbit hole. I think it took about 4 months to get the barrel and chamber work done. It is the "new" mod400 steel so they are claiming at least double the barrel life so we will see.
It is 24" in length and has a rifle +2" gas system.
The rifle will shoot. With Factory 108gr ELDM here is a 10 shot group at 100 yards. This is a typical group and it will shoot handloads either the 108 ELDM or Berger 108 just as well if not better. This is just pulling the trigger and going, no waiting between shots.
View attachment 415588
I’ve been using ASC 6ARC mags in mine. Mostly using the 15rd but some with the 4rd. I have had no issues that were mag related.What mags have people had good luck with? Any other build tips? I'm about to purchase a 18" barrel and a Coda carbon fiber handguard. Goal is to make a lightweight mountain semi-auto.