The MUR-1A is a rigid Mil-Spec flat-top upper made to fit all AR15/M16 M4 rifles and carbines. The MUR was developed to give the customer a Mil-Spec correct upper receiver with a thicker wall, making the MUR upper receiver a stronger platform. This more rigid upper receiver will increase accuracy and reliability, while extending the life of the interfacing components. The MUR-1A model comes equipped with a shell deflector and forward assist.

FEATURES:

• Precision machined from an aircraft-grade 7075 aluminum forging
• Stress relieved, heat treated and cryogenic treated
• Tan KG Gunkote over a hard coat TYPE III Class 2 anodized finish
• Bore coated with dry film lube over the anodized surface
• Compatible with all Mil-Spec AR-15 parts and accessories
• Forward assist and shell deflector assembly
• M4 feed ramps