STEN MK3 SEMI AUTO TUBE BLANK. This design works with our standard horizontal and vertical feed semi auto bolt kits. This tube is cut to length but will require machining on a lathe, the included template must be applied with glue (not included), and then cutting out the slots and ports can be done. This is a NON-RETURNABLE item and COPYRIGHTED for single use only, all sales final.

Both ends of this tube blank must be bored out. All dimensions are listed on the template.