Brownells Blueprint: Custom Builds - MK18

The MK18 Mod 1, renowned as the ultimate close-quarters AR15 upper receiver, prominently features the Daniel Defense MK18 upper in this build. With components such as the B5 SOPMOD stock, BCM MK2 RMS, and a LAW Folding Stock Adapter, this AR platform delivers a compact and agile design. The inclusion of a 3x magnifier behind the Eotech EXPS not only enhances short-range effectiveness but also extends the rifle's capabilities for a broader range of applications. This precision-engineered parts in this build exemplifies adaptability, making it a modern must-have in the world of versatile and powerful firearms.

The rifle setup shown in this image includes a short barrel rifle (SBR), which is considered a regulated item under the National Firearms Act (NFA). If you’re thinking about building a firearm in this configuration, make sure you follow all federal, state, and local laws including getting the proper approvals and paperwork from the ATF. It’s on you to stay compliant.