MRP-L M-LOK SPECWAR 5.56MM ASSEMBLED UPPER RECEIVER Built with operational performance in mind, the new LMT Spec War upper was designed in partnership with some of Americas most specialized warfighters. This upper was built to utilize the new 12.5a ^2 MRP barrel as well as other 12a ^2 or greater barrels. We removed the built in forward QD swivels and extended the length over the traditional CQB length to improve ergonomics and accessory real estate. What this does is give the user a better fighting edge and increased lethality. Among keeping the classic barrel swap capability, the Spec War focuses on the need to maintain a rigid platform for mounted laser aiming and illum Mfg: Lmt Defense