I decided I want to put a 1-4 scope on my 300BLK AR Pistol and was unsure of whether I should upgrade the barrel to a name brand (rainier, noveske, AAC) 10.5" or stick with the 8.5" MAS Defense I bought on a whim awhile back (it was on sale and I just wanted to get into 300BLK).  To test my current setup, I put my Bushnell Elite fixed 10x scope on my AR pistol (which looked ridiculous) and shot it off bags.



Unfortunately, I didn't have time to load up any reloads or buy any match ammo, so I used what I had on hand - Ozark Ordnance 147gr FMJ.  Here are the results at 100yrds:




I had some 168gr loads already loaded up but hadn't done any load development with them and they grouped similarly.  What kind of results are you guys getting with the MASdefense barrels?  Do you think this is acceptable accuracy for a gun that I want to put a 1-4 scope on?  Personally, I think 10.5" would make more sense for a scoped gun and I like the looks of them better, but maybe you guys could provide some more insight.