The MUR 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.

Features

• Aircraft-grade aluminum construction
• 7075 Forging
• Stress relieved, heat treated, aged twice and cryogenic treated
• Hard coat anodized, black per MIL-A-8625 TYPE III Class 2
• Precision machined and finished by hand
• Bore coated with dry film lube over the anodized surface
• Compatible with all Mil-Spec AR-15 parts and accessories
• Available with forward assist (MUR-1A) 

Specifications

• Weight: MUR-1A- Less than 10 ounces
• Length: 7.657 inches
• Height overall: 2.121 inches