STEN MK3 SEMI AUTO tube that can work with our standard horizontal feed bolt (MK3SAK) or our vertical feed bolt (MK3VSAK). This tube is vented which means that it has a 52 hole pattern drilled around the barrel shroud. Made from aerospace grade 4130 DOM tubing. Template is included but NOT attached. You will need a dremmel tool or milling machine and a welder to assemble. This design has been classified by the ATF as a firearm and not a machinegun. This is NOT a receiver and does not require a FFL for purchase.

Very limited quantity available. Old stock with minor surface blemishes due to age.