I bought a complete RRA 9mm Carbine a few years ago with a single stage trigger.
Today, I bought the .40 S&W upper to go on that 9MM lower.
Besides magazines, is there any thing else I will need to purchase to get the .40 upper to work on my 9mm lower?
The web site is confusing to me.
I hope all I have to do is connect 40 upper to 9mm lower with new magazines.
This was a project I started when RRA FIRST made the announcement about making this rifle.
I actually lost the hope to finish this goal for a son of mine to have a 9mm ar with a .40 upper a long time ago. I used the
cash I was saving for a t/c system with three barrels. I was picking up a Remington 700 that I was replacing the x mark trigger with a timney when I saw the upper.
It was the upper that I originally placed all the years ago. Well, it followed me home and now both my kids have ar lowers with two uppers.