After almost a year of effort, I finally have my latest AR put together... Olympic upper in .45 acp, Bazooka Brothers lower in .45 acp. Uses grease gun mags. DPMS LPK. Bushmaster adj. stock.
I think of it as my 21st century version of the Thompson. All I need is a drum mag! And yes, I have some extra acp to run through it....and plenty of targets to "ventilate". I'm thinking of adding a "burst trigger" that they have at the gun show.
Now, I am looking for a upper in 7.62X39 to bring my last lower to life.....MG