Carolina Shooters Supply DIY trigger guard, Tromix modified tapco FCG, Tapco SAW pistol grip, Carolina Shooters Supply modified bolt hold open, Carolina Shooters Supply axis pin retaining plate, Mississippi Auto Arms internal reciever block, ACE M4 folding stock mechanism, Palmetto State Armory mil spec buffer tube, Magpul MOE stock, Surefire 10rd magazine. Future plans, Choas quad rail, hk style sights, and a barrell shroud, and some sort of vertical grip.