I have a complete Aero M4E1 Enhanced Lower receiver. With Magpul furniture, Aero lower parts kit and Aero spring and buffer. All assembled and ready for your next build. I switched to a different lower on my build and don’t need this one, it’s never been used. I’m asking 300 for it, I got more in it than that so I’m firm on the price, no trades. Must be willing to do a bill of sale and meet in a safe public setting. I don’t check my emails text me at 2one4 448 1875.