This page will be about a Monarch Arms AR-10 in DPMS pattern .308 that I built. This build is unique in that this was one of their tests beds to run an AR-10 platform that took stock HK G3 magazines. Being that I have several HK’s and many G3 mags, this was an intriguing purchase for me. It has a Ballistic Advantage barrel and I started it with a standard non adjustable gas block.
You will see below, both 7.62×51 and .308 factory rounds that I fired at target at 100 yards. I only have a 3-10 scope on this gun and I was shooting at 1 inch dots. The first shots are with a non adjustable gas block.
Then I will install an agb and re-fire to see difference if any to the brass. Personally, I think this is way over gassed, and it is fairly sharp on the recoil, proper .308 buffer and spring is installed. Just stock parts.
Wolf MEN MKE HORNADY BLACK HILLS
standard gas block
cmmg adjustable gas block
GROUP SIZES DIDNT CHANGE PER RELEVANCE, HOWEVER, ES/SD DID CHANGE WITH GAS BLOCK CHANGE. CBC WAS ONLY INVERSE, ALL OTHERS INCREASED.
WOLF CBC MEN
MKE PMC
HORNADY BLACK HILLS