The all black one is an Aero Precision upper receiver and an Adcor billet lower receiver. It has a Colt SOCOM 16" Barrel, 13" Geissele MK2 rail in black, Trijicon Accupower 3-9 Scope in an ADM Recon mount. The grip is a B5 P-grip 23. The stock is a Magpul STR. The iron sights are Magpul MBUS pros. The sling is also a Blue Force Gear VCAS but with metal hardware. It has a VLTOR A5 receiver extension/buffer system. It also has a Geissele G2S trigger. The bipod is a Harris S-BRM with a home made knock off pod-loc.