The LWRCI DI is made with the same craftsmanship and design excellence that comes with every LWRCI firearm. the LWRCI Di delivers “keyless” bolt carrier design; cold hammer forged smooth barrel; Magpul MOE+ grip; modular, one piece free-float rail; ambidextrous charging handle; angled ergonomic fore grip w/QD sling point and ambi lower receiver is compatible with the rest of our IC family, you can upgrade your Di to our flagship, piston-driven IC just by switching out the upper.