These barrels are made from high quality steel and have a 10 groove right hand twist. Two small parts need to be welded together. This kit includes the following high quality American-made parts a semi-auto bolt, cocking handle, standard AR firing pin, roll pin, firing pin spring, bolt stop, guide rods, rear barrel bushing reduced diameterrod retainer, hammer, recoil springs, and assembly instructions. You will need this kit, one of our MK3 vertical feed tubes, and an original MK3 parts kit in order to build a legal semi automatic firearm. The bolt in this kit is machined to allow feeding from a vertically mounted magazine housing similar to the MP and the MP This is not a modified standard semi auto bolt but a specially machined bolt. The holes are drilled before the template is put on. This tube is vented which means that it has a 52 hole pattern drilled around the barrel shroud. The sight rail is straight and firmly welded into position so it will not break off.
#STEN MK II SEMI AUTO CONVERSION FULL#
This tube is "original" which means that it has the full length sight rail, 5 venting holes, letter stamp on the front, and holes in the sight rail just like the original ones do. The high quality template is CAD drawn and includes critical dimensions and assembly tips. This tube has the magazine port located so that the magazine will be in the vertical position which is similar to the MP This is made from high quality American DOM tubing and designed to work with our MK3 vertical bolt conversion kit. This new design allows you to use the hook safety like the originals. Tubes from other vendors are not designed to work with these parts. We do not recommend using tubes from other sources with these kits. These kits are designed to work with the tubes that we sell. This kit includes the following high quality American made parts: a semi-auto bolt, cocking handle, standard AR firing pin, roll pin, firing pin spring, bolt stop, guide rods, rod retainer, 2 sets of springs, rear barrel bushing, rivets, and assembly instructions. You will need this kit, one of our tubes, and an original MK3 parts kit in order to build a legal semi automatic firearm. This closed bolt system works extremely well and eliminates the problems of kits offered by other companies. GunnitRust Mark II Sten Project - Part 7 - Cutting up the Parts Kit This tube is vented one which means that it has a 52 hole pattern drilled around the barrel shroud. This tube is original which means that it has the full length sight rail. This design has been classified by the ATF as a firearm and not a machinegun. You will need a dremmel tool or milling machine and a welder to assemble. The back of the tube is bored out to accept the original spring cup and retaining ring. The front of the tube is bored out to accept the original front barrel bushing. When finished, this tube will not accept a fully automatic bolt. This is made from high quality American DOM tubing and designed to work with our conversion kit.
STEN Machine Gun Parts & AccessoriesĪll of our MK3 tubes have the same functional dimensions.
This tube is plain which means that it has no venting holes around the barrel shroud or a sight rail. We have six styles of MK3 tubes available. New and improved design! New design allows you to use the hook safety like the originals.
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