This product listing is for a SWD M11 that has been upgraded with the highly saught after Lage Manufacturing MAX-11k upper, Lage M11 mag release lever, and a Shockwave ZMAG magazine. Both significantly increase reliability, ergonomics, and add the ability to add numerious after market red dot options. Red dot(s) not included but available for purchase. This is a machinegun and all NFA rules apply.