Here is a link to our AR lowers:
I have a shipment coming in in about 10 days.
Depending on the upper you go with will be the final cost on your new carbine. RockRiverArms, CMMG, Colt, Spikes Tactical, and I think there’s another player out there, selling 9mm and maybe 40S&W uppers.
There is a minor modification to the bolt in order for it to work with Glock mags: