Semi-Sten: CFC AND RCMP approved and Home at Last

stencollector

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Some of you who have been on this board for more than a couple years may recall my dilemna in trying to get a semi-auto sten registered. I built one of the US kits found at www.semiautosten.com . When I had it to the point that it would fire, I had my firearms officer over to verify it, and submitted the application. Several months later I received a call from one of the techs at the CFC wanting to know what I had built. I told him, and described the kit. He later got back to me and told me that the RCMP lab considered the magwell the registered part of the sten, and therefore it was considered a converted auto/prohibited gun. He also told me that the CFC considered the trigger housing as the registered part of a sten, and therefore it was a converted auto.

I pointed out that I could fire the gun without the magwell, so it wasn't a particularily important part of the gun. I also pointed out that if you were to remove the trigger housing off a F/A or C/A sten, that upon releasing the bolt it would fire until the magazine was empty, so really the trigger housing wasn't particularily important either. As well, the trigger housing was never really a replaceable part of the sten, as it came as part of the receiver weldment. I made my point that the tube is the critical part of the sten, and should be considered the receiver. This is the view of the BATF in the US. I also told them that when they decided what constituted the prohibited part of this gun, to let me know and I would build a brand new one.

After a year, I contacted the CFC again, wanting to know what was going on. At that point I was told the RCMP lab was still considering the origional sten magwell made it a prohibited gun, and that an individual could not make a firearm for his own use without a manufacturers liscence.

Anyway, today I receive a couple of registration certificates from the RCMP, and lo and behold, there is one for my semi-auto sten. Just in time for it's second birthday, I might add. :) I don't know what changed their minds, but I guess if I ever meet George, the CFC tech, I will owe him a beer.

It is registered as a commercial version, and is classed as restricted. I'll add the FRT # to this thread once I have it.

This kit features a closed bolt, using an AR-15 firing pin. There are some issues with the cheapo springs that come with the kit, but I will work through these issues. The origional kit was meant for a mk3, but I modified the kit into mk2 configuration. It's a little more work, but a nicer looking gun in my opinion. Sorry, no photos for now, as I took the gun apart back when these issues first came up, in case they came to collect it. But as soon as I have time next week, I'll finish it up and get some photos on this thread. I'll also post a range report next week once I run it to the range and try it out.

See, good things can happen when you are really patient.

Edited to add: found some old photos stashed in my photobucket. Here they are:
Dscf0069.jpg

The partially completed gun. It still needs the front sight dovetailed in and beadblasting/bluing.
Dscf0070.jpg

A view of the left side. The cocking slot is indexed at a different position of the casing to prevent the installation of a turned down F/A bolt.
Dscf0071.jpg

Here is a photo of the internals. A bit crude, but I'll get them to work.
 
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My wife is ex-naval reserves. Her favorite firearm of the time was the sub-machine guns (because that actually fit a smaller individual), and those were stens.

I had always promised here that if I could, I would get her one. I do not have any 12(?) paper.

You may have just made it possible for me to keep my promise to her.
Please contiue to share any info, and please keep us up to date as things progress.

greatfully yours

R
 
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Very cool, how much did everything cost? Congrats.

The basic kit runs around $300-400, and then you have to find a sten parts kit to complete it. You also will spend a couple bucks on dremel discs to make the cuts onto the tube.

Way cool... guess you need to start rewating all those dewats I'd be in for one
If course, a dewat can't be unwatted, it has to be permanent. As well, I am not a manufacturer, so I cannot build these for others. But I will certainly offer my assitance to anyone else who wants to try.
Actually, a dewat sten would supply most of what a guy needs, other than the barrel. Some of the welds might be a bit tricky to un-do.
 
Sweet.

First the StG-44's, MP-40's, and now we have Stens. Great work!

All we need now is a legal re-pro semi-auto Bren Gun. I'd pay good money for that.
 
where'd you get the kit?? I want one.

Follow the link I gave in the beginning of this thread.

My wife is ex-naval reserves. Her favorite firearm of the time was the sub-machine guns (because that actually fit a smaller individual), and those were stens.

What years did she serve? The stens were phased out of the Cdn service by the early 60s in favour of the C1 (a Cdn cheapened version of the Sterling SMG). If it was the sterling she worked with, there is a restricted only Sterling mk4 PC out there, but they are fairly rare (about 50 in the country) and expensive.
What is the barrel length?

It has the standard mkII 197mm barrel.
 
Too bad the bolt doesn't "look" original, cosmetically I mean. Can you do cosmetic machining to the exterior to make it look the part?
 
Enfield said:
I would like to build my own Semi -Auto STEN. How do you get started and where do you buy STEN parts kits in Canada?:dancingbanana:

Enfield

First, you will need the semi-auto kit that is available from the US. Going by the rules, there is a bolt there, so you would require an Cdn import certificate/US export permit for that. It shouldn't need a Cdn import permit, since the gun is not a military gun.

As to the Sten parts kits, I have seen a few of them show up on the EE. A mk3 kit might be easier, but a mk2 or even a mk5 is quite do-able. If you find any of the Cdn government cut-ups, these will work fine, except you will have to find/make a new barrel as the barrels were normally cut. You won't need the origional bolt, and they will normally fetch about $125 to the guys who want a spare for their F/As or C/As.

I am fairly certain that I am not the first to assemble on of these kits here in Canada. But I am pretty certain that I am the first to have one verified, and a FRT attached to it. I heard a rumour that a Cdn gunsmith/auction site/dealer was going to try and assemble a bunch of these kits (I believe it was 20 if I recall correctly) but that was a year ago, and I don't know if they are still going to try.

Unfortunately I am busy this weekend, so I won't have time until next weekend to put it back together and run it out to the range for a test fire.
 
I guess an obvious question is, would an open-bolt, semi-auto, sten be approved as well. This would be an easier build, because all you have to do is replace the tube and weld the selector in the "semi" position.

It would be nice to know how the CFC and RCMP reconciled their positions. Stencollector - have you though about submitting an ATI request to get the relevant CFC/RCMP docs?
 
Plinker said:
I guess an obvious question is, would an open-bolt, semi-auto, sten be approved as well. This would be an easier build, because all you have to do is replace the tube and weld the selector in the "semi" position.

Open bolt would be too easy to make F/A. If you weld the selector, you can cut the bottom of the disconnect (the L shaped thing) off. Or you could drill two holes in a popsicle stick and do away with the disconnect altogether. Or you could grind the bottom of the bolt "hump" off and have a runaway. Or you could tie a string between the trigger and the sear.
This kit has the extensive BATF approval, which likely didn't hurt it's acceptance.

The closed bolt has the feed horns not built onto the bolt, so if the firing pin is forward, the round will not feed in to the chamber.


It would be nice to know how the CFC and RCMP reconciled their positions. Stencollector - have you though about submitting an ATI request to get the relevant CFC/RCMP docs?

I am planning on giving the CFC a call tommorrow and find out what transpired. Hopefully it wasn't a mistake.
 
I wonder how that new BD-3008 contraption that marstar is bringing in works, from the pictures it sounds like a simple affair of turning the mag well 90 degrees clockwise (and possibly modify the bolt) to get something that could pass off as a reasonable approximation of a Sten ... And if it happens to fire from open bolt (not sure about that as i've never seen one).... and with the addition of a 471mm barrel, non-restricted to boot !
 
I don't know that cutting up a $2400 BD-3008 would be a practical option to produce a Stennish gun. Not to suggest in any way that the BD-3008 is overpriced, but if a semi Sten could not be scratch built commercially for less than $2400 plus the cost of modification to the BD-3008, I'd be surprised.
If there is a market for the BD-3008 in Canada, there should be a stronger one for a commercial version approximating a LB Mk. II.
 
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