Custom AR9. Areo Precision upper and lower receivers, Ballistic Advantage 5.5 inch barrel, KNK 5 in forward muzzle blast device. Toolcraft black nitrate bolt carrier group, LMT buffer tube, KNK 9.2 Oz dead blow buffer, weapons of mass destruction nickel boron fire control group, Troy Industries folding iron sights, Midwest Industries suppressor ready handguard, BCM forward pistol grip, Magpul pistol grip. Gun is super reliable and super accurate. Has about 500 rounds through it and has never had a single malfunction. Frt/supersafety ready. Bolt carrier weight is properly cut for super safeties, also the heavyweight buffer. Was originally an 8.6 ounce buffer that's had an extra tungsten weight added making the total weight 9.2 Oz two more steel weights can be replaced with tungsten to make it even heavier.