Alternative methods of blocking a magazine

PoFF

PoFF

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Well it seems that the most popular method of blocking the capacity of a rifle magazine to 5 rounds it to put a river through it in order to stop the follower from going "too far" down.

Now, I was wondering if there were other legal ways to block the capacity of a magazine, specifically AR-15 magazines, without modifying the external appearance of the magazine.

Also, can a police officer of any other person that can enforce firearms laws ask you to disassemble a magazine to show how it is blocked, or they can only ask to prove that you can not fit more than 5 cartridges in it?

Thanks for the information.

PoFF
 
I don't think a wood block will work:

Criminal Code Regulations set out the following options for altering a prohibited magazine to make it legal:

1. The casing can be indented by forging, casting, swaging or impressing; or
2. If the cartridge has a steel or aluminum casing, a plug, sleeve, rod, pin, flange or similar device, made of the same (or similar) material as the casing, can be inserted and permanently attached to the inner surface of the casing by welding, brazing or any other similar method; or
3. If the cartridge is made of a material other than steel or aluminum, in addition to the options mentioned above, a permanent adhesive substance such as cement or epoxy glue can also be used to attach an insert. In this case, the insert would have to be made of steel or a material similar to that of the magazine casing.
 
A wood block will work if you make it so the magazine plate can't be opened to remove it. You can do this by riviting it or welding. Won't be able to clean it though. I say stick with the pop-rivit, best way I've seen.
 
+1

Look for counter-sunk rivets; they are more expensive, but you won't be scraping the crap out of your AR and have to try and file down the rivet flat.

I also suggest the standard green followers since you can still completely remove install them for cleaning with the rivet in place.
 
I came up with a method for blocking them using copper pipe. The rivet goes through the hole in the floor plate. No worries about it scratching or binding in the mag well.
Unfortunately..I don't think I have the pictures anymore of the process.
 
G37 said:
I don't think a wood block will work:

Criminal Code Regulations set out the following options for altering a prohibited magazine to make it legal:

1. The casing can be indented by forging, casting, swaging or impressing; or
2. If the cartridge has a steel or aluminum casing, a plug, sleeve, rod, pin, flange or similar device, made of the same (or similar) material as the casing, can be inserted and permanently attached to the inner surface of the casing by welding, brazing or any other similar method; or
3. If the cartridge is made of a material other than steel or aluminum, in addition to the options mentioned above, a permanent adhesive substance such as cement or epoxy glue can also be used to attach an insert. In this case, the insert would have to be made of steel or a material similar to that of the magazine casing.
Click to expand...


Sweet, so if it's a thermold mag, we can use superglue? :D
 
Good point there FireMachine... as usual, don't try to find any sense in their laws.

Well, looks like I'll be sticking to a pop-rivet to re-pin the mag (was blocked to 4 rounds...). Thanks for the tips guys.
 
That is true... a Thermold Mag would be nice to pin and look good too.
Hmmmmmmmmmmmmmmmm

Anyone know of any sources for Thermold Mag Bodies in Canada :) ? heheh
I am going to have to do a search now.
 
What do you think Thermold mags are worth? If they're blocked internally with a rivet through the hole in the base such that they're still virgin? I don't think I'd want to mess around with glue all in it. I've never actually played with any but might be fun to find some...
 
Blocking AR15 magazine – alumimum flat stock in spine

I received several Brownells 30/5 magazines (green follower) that were blocked incorrectly so I had to re-do them.

I am not a gunsmith, but the following method (using a ruler, hacksaw, vise, files, pop riveter, centre punch and a drill press) worked for me:
  1. Prepare 1/8" x 3/4" aluminim flat bar stock (Home Depot SKU 142-640) by cutting 5.25" long and squaring and smoothing ends.
  2. Centre punch and drill 9/64" holes in spine of magazine approximately 1" & 2.25" from base (between welds).
  3. Slide baseplate toward front of magazine (leave spring and follower in tube) so baseplate contains spring but exposes approximately 3/4" at spine.
  4. Brush & blow drilling debris from magazine.
  5. Load magazine with 5 dummy rounds.
  6. Insert magazine into rifle with bolt closed, ensure magazine catch engages.
  7. Insert bar stock up along spine of magazine until end is firmly against bottom rear of follower.
  8. Mark bar stock through holes in spine.
  9. Eject and empty magazine, remove bar stock.
  10. Centre punch and drill 9/64" holes at marks on bar stock.
  11. Insert bar stock up along spine of magazine and align holes in bar stock with holes in spine.
  12. Fasten 1/8" aluminum rivets through lower, then upper hole in magazine spine into bar stock.
    Note bending of bar stock on application of upper rivet may increase capacity slightly.
  13. Test by loading 6 dummy rounds (last must not fit), then insert magazine containing 5 dummy rounds into rifle with bolt closed and verify magazine catch engages without undue pressure on magazine base.
The rivets are below the magazine well so they don't interfere with magazine insertion or removal.

Snapshot
 
G37 said:
That is true... a Thermold Mag would be nice to pin and look good too.
Hmmmmmmmmmmmmmmmm

Anyone know of any sources for Thermold Mag Bodies in Canada :) ? heheh
I am going to have to do a search now.
Click to expand...


So what are you thinking other then a rivet, I'm curoius sounds interesting.:)

Anyone used an alternate method on the Thermolds?
 
I am sitting in a hotel room in Fort Campbell with 4 thermold mags that I picked up for $5 each. They come apart really easily and pinning would be fairly easy.

I am tempted to just mail them back to myself and avoid all the border hassles.

Incidently, Ft. Campbell has the most incredible army surplus and first line gear stores I've ever seen. If you find yourself in Kentucky with some time on your hands, I highly recommend a trip over there...

IMG_0026.jpg
 
I did a bunch of thermolds about a year back. I made a little "L" shaped piece of metal which I would heat and push through the spine of the body at the appropriate 5.5 round position. Then I would use a heated screwdriver to smooth out any ridge on the plastic, and cover over the metal piece. The block wasflush, almost invisible, and took just a few minutes from start to finish.
 
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