In the pursuit of precision and reliability, the foundation of any custom build must be uncompromising. Enter this Mk4 Upper Group assembly—a testament to craftsmanship and engineering excellence. At its core lies a meticulously installed M4 barrel extension, ensuring seamless compatibility with your firearm's upper receiver.
Each barrel sub-assembly is expertly head spaced, guaranteeing optimal performance right out of the box. Constructed from robust 4140 Chrome Molybdenum (CM) steel, this component promises both durability and resilience in demanding conditions. The addition of a Salt Bath Nitride (SBN) finish further enhances corrosion resistance while improving wear characteristics over time.
For those who demand nothing less than perfection in their custom builds, this Mk4 Upper Group offers unparalleled quality that stands ready to meet the rigors of practical application.