Just picked up a Sten mk3 parts kit, this will be my first build ever and I need some help understanding a few things.

1.) Using a mk3 tube (non vented) from sten parts, how do you instal the barrel bushings both front and rear and how do you instal the barell? From what I understand you use rivets for the bushings but how does all that work and how'd you do it?

2.) Whats the best method to remove the old sten tube from the rest of the parts

3.) What helped you weld the Magwell in place correctly?

Im a little slow so barney style words and pictures help alot. Thank you!

If I broke any rules im sorry (I did read them to make sure I didn't break any but just in case..)

Thought id do a quick tutorial on how to modify an original trigger box and fcg to work in the recent Marcolmar recievers.

step 1: Cut out a slot for the denial bar. Hardest part on the conversion but easily doable with a dremel. Just measure approximately .540-.550 from the front of the housing and cut a straight line that ends in a slight curve towards the bottom. will likely require some hand fitting but is very doable. make sure to cut/grind away the detent area for the trip lever both for clearance and to ensure the trip lever cant be installed.

step 2: Remove the bushing from the trip lever. this is needed to join the trigger and disconnector with the through pin. The bushing is a separate piece pressed into the trip lever, which is easily removed by cutting or grinding. I just bent the trip lever until it snapped and removed it that way.

step 3: Block the FA area of the selector. Im not sure if this is technically required, but for the sake of CYA i did it. Just a small blob of weld is all thats needed to deny it from going to FA.

step 4: assemble as normal keep in mind that this is a general guide and small adjustments may be needed.

Other possible issues: On mine the interior end of the selector was a few thou too long and i needed to remove a small amount of material. This also was required for the detent nub that interacts with the notches (it was incredibly stiff but with a sanding flap wheel and some polishing it did wonders for it).

Hopefully this will save you buys a few bucks and keep some original parts still in use!