this is a stock pic from my old shop in new mexico...this was an M4 Colt, reconfigured to fire .45 ACP (shorts)...the barrel has been costom made with a aluminium sheeth over the carbonfiber 'mid'-barrel...it has a moddified mpk7 magazine, a veridiam x5l front light/laser combo, standard m4 vert grip, (i forget who mkes the front RIS, it might b custom)