Aero M4E1 Lower Receiver

[Talking Monkey]

Any thoughts on the new Aero M4E1 lowers? I’m interested in possibly using one for an upcoming 3gun build. I like the extra flare to the magwell, but am unsure about the added non-standard threaded parts.

[WickedWillis]

I have a Seekins Billet lower that uses these same style screws and threaded parts. All of that functions very well imo, and helps to cut down on losing pins and all that good stuff. If this one is like the Seekins though, every magazine with an over-insertion tab is a no go and will not fit.