Preview images shown are examples of professionally manufactured Semi-Auto STEN MK2/MK5 receiver tube builds produced to semi-automatic specifications using a properly machined semi-auto tube designed specifically for semi-automatic bolt assemblies.
This listing is for professional labor and manufacturing services only. Customer will supply the required parts/components for the build, including the semi-auto bolt assembly and related hardware. Due to limited availability and purchase limits on certain components, the builder can assist customers by identifying exactly what is needed and directing them toward reputable sources for obtaining compatible parts.
This is not a mass-produced component or generic unfinished assembly. Each receiver tube build is individually fitted, aligned, machined, and professionally welded by a licensed Type 07 FFL manufacturer with close attention given to fitment, alignment, reliability, and authentic appearance. Due to the amount of specialized labor and craftsmanship involved, production capacity remains limited.
Every build is completed using professional tooling and proper fabrication methods to ensure a clean overall finish and reliable foundation for final assembly. The trunnion is professionally fitted and welded in place to maintain proper alignment, strength, and durability.
Unlike lower-quality rushed assemblies, these builds are intended for collectors and enthusiasts seeking a cleaner, professionally manufactured STEN platform with proper craftsmanship and attention to detail throughout the fabrication process.
Optional services and customization may include:
• Ejector welding service (+$75)
• MK2 or MK5 configuration options
• Additional fitting/customization requests depending on project requirements
• Guidance regarding compatible semi-auto components and setup
Customers who may be unfamiliar with STEN parts sourcing will be assisted throughout the process. Communication is maintained during the build to ensure proper compatibility between supplied components and the final configuration requested by the customer.
Current manufacturing turnaround time is generally a few weeks depending on production queue, customization requests, and parts availability. Customers will be updated regarding estimated completion timelines as the project progresses.
Each Semi-Auto STEN receiver build is professionally inspected for quality, fitment, and workmanship standards before shipment or final completion.
The STEN platform continues to grow in collector and enthusiast demand due to its historical significance, iconic wartime design, and increasingly limited availability of quality semi-automatic reproductions and professionally fabricated receiver builds.
More photos and additional background information are available — search Sam’s Arms Repair on Instagram or Facebook
