Magtube Spring, very confusing situation.

greg11

greg11

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I got a +2 mag extension, and have made a plus size follower so that it will not accept a 6th 3" shell.

Now I'm stuck...

I can get 5 2.75 shells in the tube, and about 90% of the 6th shell in, but the spring is as tightly coiled as if can go.

However, I have a spare (identical) spring that I've cut a little shorter, and with it the tube will take that 6th shell, but there isn't enough tension to positively feed the final shell in the tube.

Does anyone know what's going on here? I'm very confused....
 
Nope...

There is no binding. And the shorter spring won't give enough tension to positively feed the last round.

I think this might have to do with spring rates or some other "science of spring technology"...
 
If the only thing you've changed is adding a homemade follower, I would suspect that and check dimensions.
 
measure the mag tube and measure your 6 two and three quarter shells . i think your follower is too long as if you can not get 6 shells at the short length in it definitely wont allow six three inch shells in . did you try it with the original .
 
sounds like the cut down spring isnt pushing all the way, try stretching your cut down spring to the same uncompressed length as your unaltered one
 
I found this to be a very confusing thread. Not quite sure what to suggest. I would however like to reiterate "BJPs" post.

All I got from this thread is that some mess with guns without a thorough understanding of what they are doing playing gunsmith and the Firearms Act.

My apologies for being so forward. As you were.
 
Easy. Reread my post. I permanently modified my follower. What I did has precedence on the matter.

M14 mags have their capacity limited by a modification to the follower, so does my SKS, which has a pin welded on to the follower to prevent it from going down any further than is necessary for 5 rounds to fit in the magazine.

Explain how this is improper procedure?

You could not take the follower apart without some significant work being done and some tools....

If you think something is illegal here, I'd appreciate the tip.

So far as "permanence" goes:
A rivet takes about 1 second to drill out.
The rod on my SKS follower could be bent off with nothing more than a strike against a hard surface.
Tapco SKS mags only require a small pinhole to be drilled and then simply slide the base plate off the magazine and yank the plastic plug out (required for cleaning the magazines anyway, so most people here likely have the holes drilled in the appropriate place right now).

You can never "permanently" modify a magazine down to 5 rounds. So, what is reasonable, under the FA, would be any modification that is not easily reversible without a tool of some sort.

My follower modification complies with this rubric.

Again, explain to me how it doesn't?
 
To my understanding, the magazine of any gun must be permanently modified. A rivet falls into that category, so does lancing, welding, or gluing plastic mags, but just a plug does not pass mustard, I believe.

What you're doing is essentially creating a plug assembled with the follower somehow to limit quantity, and that's fine, but you'll also have to make it so that you cannot just unscrew the magazine cap and break the plug off. Same goes for those screw and nut modifications.

A good example would be an AR magazine, like the Colt 20 rounders. You could insert a dowel beside the spring on it's spine to limit the mag to 5 rounds, but you also install a rivet on the baseplate so you cannot slide the baseplate out and easily remove the plug without a file or a drill.

Look at 9mm Colt mags. People don't want to damage the bodies by drilling and popriveting at the spine. So we install a dowel plug to limit to 5 and install a rivet though the exsisting holes in both baseplates preventing easy disassembly.

A plug is fine for conservation authorities, but not the FA.

If I were you, I'd drill a hole through the magazine extension, install a brass rod to limit the spring's travel and forget the follower mods. Buy a follower that you like and use it to locate where you're going to drill the hole.
 
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Easy is 100% correct on this, just modifying the follower is not enough. If you don't believe me just read the act, acceptable modifications are spelled out. I'm NOT saying I agree witht he laws, just trying to keep you out of trouble.
 
Okay, so here's what I'm thinking.

I read the regulations in the CC pertaining to prohibited magazines.

I think you're right insofar as you can remove the follower and the gun will still feed shells (without a follower the spring will enter the receiver, but I can still imagine a CFO busting balls over that).

In BBB's +2 930 extension, there is a hole on the end. I'll enlarge this hole and insert a bolt, then mix up some permapoxy and pour it (carefully) directly down the center of the magtube ext, surrounding the bolt's threads and its nut.

Would this qualify as permanent do you think?
 
greg11 said:
Okay, so here's what I'm thinking.

I read the regulations in the CC pertaining to prohibited magazines.

I think you're right insofar as you can remove the follower and the gun will still feed shells (without a follower the spring will enter the receiver, but I can still imagine a CFO busting balls over that).

In BBB's +2 930 extension, there is a hole on the end. I'll enlarge this hole and insert a bolt, then mix up some permapoxy and pour it (carefully) directly down the center of the magtube ext, surrounding the bolt's threads and its nut.

Would this qualify as permanent do you think?
Click to expand...

This is pretty much what I've stated in your other thread :)

Modifications to the "mag body" are "considered more permanent that something done to the follower"
 
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