2 mac 11 uppers left hand side picatinny uppers work on semi/full these are hard to get these days everyone is back ordered or takes weeks to get. 

Comes with 2 new shockwave mags. These are the ONLY mac mags that work. If you know, you know.

2 mags new in wrap included. These are made on as as needed and are not always in stock.

In suprise but can meet a little closer in towards the middle of town.