If you are converting a standard 5.56 lower to 9mm, make sure you get the correct buffer and spring.
Printable View
If you are converting a standard 5.56 lower to 9mm, make sure you get the correct buffer and spring.
I've had a complete RRA 9mm AR for years, bought under the same premise as the OP. Great training gun, lower ammo cost (at the time), pretty fricken reliable with good mags. I use the C-Products metal mags, tried out the cheaper promag poly's and that there was my problem. Since switching to all C-Products mags, the thing runs in a rather boring and reliable fashion. The setup pretty much mirrors my go-to carbine and I've run it in a high volume class already (hence the lesson about cheap ass poly mags).
Not really given the Oly's a look, but were I going to look at doing this from scratch, I'd most likely start with an Oly. Then again, might one day go for a .45 Cal version :)
So you've got options and I'll absolutely stand behind the RRA 9mm. It's a dedicated platform, but that was my intent. Its a training tool, not a go to weapon. I don't think the operation or recoil is noticeably different than any other AR I have.