5.56 NATO cal., 16 in. chrome-lined heavy barrel, custom magwell, integral trigger guard, rear folding backup sight, Magpul MOE stock, M4 feed ramps, commercial size buffer tube, Magpul furniture, hardcoat anodized upper and lower receiver, includes custom Fort Discovery Challenge coin (w/matching serial number of rifle), handcrafted pine box, two Magpul mags., single point CQD sling attachment, and LOKSAK bag.