I built one of my SBR lowers intoa 5" barrel CMMG Radial Delay Bolt 9mm. Turned out pretty good. Seems to cycle dummy rounds well. I'll see if I can make it out shooting this week to run a few hundred rounds through it with the silencer attached.
I tried to find it when the pics were first posted, as I hadn’t seen one.What magazine insert is that?
I tried to find it when the pics were first posted, as I hadn’t seen one.
It’s either a Sylvan Arms, or one just like it.
https://sylvanarms.com/product/gcb100/
I really need to get off my ass and order a BCG/barrel combo and try to get it running with a Colt pattern lower. But I keep waiting for the lower that takes Scorpion mags...
What lower did you use? That looks like a grease gun mag.And in 45.