The COLT M4 MONOLITHIC is a high-performance rifle with unmatched advantages. It features a one-piece monolithic upper receiver with a continuous Mil-Spec rail for mounting optical systems. The true free-floating barrel enhances accuracy for long-range acquisition. This rifle also includes a Magpul MBUS iron sight, folding front sight, and removable lower rail for under mounting accessories. Please note that it is subject to restrictions in certain states. Explore the detailed description and product categories of the COLT M4 MONOLITHIC in this comprehensive guide.