This AR15 consisted of a Bushmaster lower, LMT MRP upper (and its longer 14.5" counterpart) has been a testing platform for FCD (and before FCD) since the beginning. Many of FCD's parts have been, and continue to be tested on it, which explain the mismatching parts, patterns, unstaked castle nut, and well worn appearance, it's still on its original coat of paint from 2007 or 2008.
The FCD gun coloring sheet is a line art produced by Jean-Charles Platania [email protected]) for FCD, here in a downloadable form to fill in with your favorite colors. Lest anyone should think we don't like red, blue and white, we do, just not on duty/defense guns where decorations are best left for hobby/fun guns.
Everything on the duck test gun is functional, it's our idea of a close quarters, urban fighting carbine: PEQ15, ACOG TA31ECOS, Modlite, B5 Systems SOPOD stock, Tangodown stubby QD vertical grip, KAC backup sights, Magpul MIAD grip, and a bunch of FCD products.