Bertha runs!

AR/M4 Beyond 5.56/.223
1

The last two parts that I have been waiting for finally arrived from Aero Precision. Everything was here and waiting for the lower and gas block. I put everything together last night and went on the first function range trip today. First was 3 rounds in a 20 round Pmag. Bang…eject, look at the bolt and make sure its closed, find ejected casing, all is good to go for #2. Bang…eject, yesss! Third and final shot of the 3 went bang and the bolt held open…BIG YES! Then switched to a 5 round ASC mag that I intend to use for hunting. Same results, 5 bangs, 5 ejects and bolt held open after #5. All told I put over 50 rounds through her tonight without a single hiccup. Two different ASC mags and 3 different 20 round Pmags. I am a happy camper.

In case you were wondering about the name, Last year I bought my first two ARs (a Colt 6920 and a upper/lower for a 300 Blackout, both rifles in FDE/black). My wife promptly named them Thelma and Louise. Then an all black 300 BLK pistol grew from parts and she christened it Babette. Since this 308 AR is obviously bigger than the other three, Bertha seemed appropriate, and best of all she runs like a top!

2

Good to hear another success story with the .308 AR platform. I hope to see more of these spring up as popularity and successes continue to grow. I am so pleased with my Aero .308, I am contemplating putting a 6.5 CM upper together before I put my bolt gun together.

3

Glad to hear some of them work.

4

I think the biggest key for getting them to work is remembering there is no milspec or set standard for any of the parts. You can’t just toss Brand X DPMS style upper with a Brand Y DPMS style lower and Z’s BCG and expect it to work right. DPMS now even has 3 different types of rails, low, high and Gen II. I stuck with all Aero Precision parts for the upper, lower, BCG, LPK, and rail, and everything plays perfectly together. The Aero bolt and Criterion barrel chamber headspaced perfectly. If you start out with quality parts that aren’t a mish mash from different companies its not rocket science to get it to run. In my one rifle experience anyway.