The LWRCI Di is made with the same craftsmanship and design excellence that comes with every LWRCI firearm. Built from the ground up to be more than just another direct impingement rifle"" the LWRCI Di delivers the quality every rifle enthusiast demands with innovation that's expected from LWRCI. Our innovative ""keyless"" bolt carrier design"" combined with an operating system that is time-tested"" makes the Di the perfect addition to the LWRCI lineup. And"" since the 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.