UBR® Collapsible Stock
Seems like Stick has all the Magpul lowers.
Magpul UBR Stock for AR-15/M16
MAGPUL UBR Collapsible AR-15 Stock http://www.mountsplus.com/AR-15_Accessories/AR-15_Scope_Rings/MAG-330.html
Rifle 160922: Kwa Kriss Vector Ubr Stock Custom -> BUY IT NOW ONLY: $879.19 on eBay!
Magpul FDE, spikes tactical upper and lower. Bravo company BCG, 14.5" barrel, gas block, ambi charging handle, and Keymod 15" rail. Noveske KX5, Aimpoint PRO, ergo grip, and Magpul UBR stock.
San Tan Tactical Ambi Billet lower, Centurion Arms CMR rail Vortex Optics Viper PST 1-4, VG6 Precision Gamma 556, Umbrella Corporation Weapons Research Group Grip, Magpul Industries Corp. UBR Stock Diamondhead-USA BUIS, Fortis Manufacturing Shift Short grip.
Tactical Fett v2.0, Marc Lee on ArtStation at https://www.artstation.com/artwork/wKgoX