Not necessarily. If the magazine is made to NOT fit in a Glock pistol. (Typically a small piece is attached to the mag and a groove is made in the rifle mag well so it becomes proprietary) then it is 100% legal to own the 33 round magazine.

The law states:      (c)  The manufacture, possession, sale, barter, trade, gift, transfer, or acquisition of detachable ammunition magazines with a capacity in excess of ten rounds which are designed for or capable of use with a pistol is prohibited.

Your proprietary magazine is designed for your rifle only and is not capable of use with any pistol.

X-Ring does it.

I have purchased many a magazine block from magazineblocks.com. I simply insert the block, and epoxy the floorplate shut. Easy to do and makes for a permanent fix that follows the letter of the law.

You can epoxy the mag block to the follower, then you can still dissamble the mag for cleaning.
I think that's how John Perreira does it.

You can epoxy the mag block to the follower, then you can still dissamble the mag for cleaning.
I think that's how John Perreira does it.

Epoxy is not permanent though.  All you do is heat a part and it breaks the epoxy bond.

Epoxy is not permanent though.  All you do is heat a part and it breaks the epoxy bond.

Nothing in the law says it has to be "permanent".  It merely needs to be "not capable of being readily restored to a capacity of more than ten rounds."

read·i·ly  (rd-l, rdl-)
adv.
1. In a prompt, timely manner; promptly.
2. In a cooperative manner; willingly.
3. In a manner indicating or connoting ease; easily.

Nothing in the law says it has to be "permanent".  It merely needs to be "not capable of being readily restored to a capacity of more than ten rounds."

read·i·ly  (rd-l, rdl-)
adv.
1. In a prompt, timely manner; promptly.
2. In a cooperative manner; willingly.
3. In a manner indicating or connoting ease; easily.

Sorry forgot to type that in.  Restoration of the mag is easy with a microtorch/heat gun or by heating of the materials.  Epoxy bonds break down under heat it's how golf clubs are reshafted.

I don't know what kind of epoxy you're referring to but the epoxy I would use is marine grade and can be drilled and tapped.

If you heated it enough to break the bond, you'd probably melt and distort the plastic follower first rendering the mag useless ( and the mag block ).

I would use Marine-Tex or PC-11 marine grade epoxy.

I had some done where the blocker was attached to the follower and they didn't last very long.  Had them re-done and this time the block was screwed to the floor plate.  No problems so far with those, and the base pad isn't affected so I can still maintain the mags.
However, I also have some STI "magazine parts" that I'd like to be able to use as magazines, but I'm not sure the above mentioned would work with the STI base plates.  I have Arredondo limiters for them, but that whole "readily reversed" thing worries me so I just use the 10 round mags.  Would be nice to be able to use the longer mag tubes as they are easier to use with the mag well that's on the pistol.  Being able to disassemble the mag is important as they are often dropped in the dust and dirt, and riveting a shim inside the mag body (a widely used technique) would make removing the guts a major pain.  Just searching for low-cost but efficient options, hopefully I didn't thread drift too far.

I don't know what kind of epoxy you're referring to but the epoxy I would use is marine grade and can be drilled and tapped.

If you heated it enough to break the bond, you'd probably melt and distort the plastic follower first rendering the mag useless ( and the mag block ).

I would use Marine-Tex or PC-11 marine grade epoxy.

Aiea, all epoxies break down under heat.  Even the stuff we use to fasten anchors into the piers to stop 900 ft long cruise ships.

I do get what you are saying about tapping into the block as a type of anchor, but I'm having difficulty picturing it.

Sorry guys I'm being a bit of a pain here, but I've seen guys show up with AR pistols (that were probably not legal in Hawaii), but I've never seen a guy show up with a 33 round Glock mag.  I don't want to be "That Guy" if I go down this path.

^^^Sorry one more thing, I'm specifically talking about being able to modify a 33 round Glock mag for use in a KRISS Vector carbine so that it cannot be used in a Glock pistol.  I'm not sure we're talking about blocking a mag here because if it was about capping at 10 rounds I'd just buy a 10 round mag.

^^^Sorry one more thing, I'm specifically talking about being able to modify a 33 round Glock mag for use in a KRISS Vector carbine so that it cannot be used in a Glock pistol.  I'm not sure we're talking about blocking a mag here because if it was about capping at 10 rounds I'd just buy a 10 round mag.

Bear in mind that if you go this route, you'll be creating a groove inside your mag well of your intended firearm.

It will not hinder its ability to accept standard mags but it will allow that firearm to accept the modified 33 round mag with a corresponding nub.

Bear in mind that if you go this route, you'll be creating a groove inside your mag well of your intended firearm.

It will not hinder its ability to accept standard mags but it will allow that firearm to accept the modified 33 round mag with a corresponding nub.

OK I see where this is going.  Something for me to think about.

Sold my USC a long time ago and this is the only other "sub gun" type of carbine that I'd been interested in.


One more question, so I assume with the mod to the magwell the KRISS would still be able to accept the non modified mags?  So if I wanted to sell to a mainland guy who wasn't under the high cap blockade, it would be doable without further repair/mods to the magwell?

Aiea, all epoxies break down under heat.  Even the stuff we use to fasten anchors into the piers to stop 900 ft long cruise ships.

It'll anchor a 900 ft long cruise ship.

If you heated it enough to break the bond, you'd definitely ( changed from probably ) melt and distort the plastic follower first rendering the mag useless ( and the mag block ).

I had some done where the blocker was attached to the follower and they didn't last very long. 

Stop trying to stuff the 11th round in.  ( Just kiddin")

 

KK,

The last question was for you or Speedtek.

One more question, so I assume with the mod to the magwell the KRISS would still be able to accept the non modified mags?  So if I wanted to sell to a mainland guy who wasn't under the high cap blockade, it would be doable without further repair/mods to the magwell?

Yes, if done properly, it would be imperceptible to all but the most knowledgeable gun guys.

It would require no additional modifications or repairs.

Yes, if done properly, it would be imperceptible to all but the most knowledgeable gun guys.

It would require no additional modifications or repairs.

You are waving a steak in front of a starving dog man.

Hahaha!!!  You guys are killin' me!

JP blocked mags - I had trouble stuffing even 9 or 10 rounds in depending on how they stacked in there.  It was pissing me off in class: loading 1-6, 7, 8... 8... 8  WTF  8... grumble swear unload start over 1-6, 7, 8...8... 9!  9... 9... @!#$$#^Y# ding low chang yow uppa kwaidai ah Q#Q^%&# 

So I want to trim the block down a skoosh see if that helps.  Damn dumass "law" to begin with.  If I expire in a gun battle because the mag malf'd somebody sue the state for me.

Are you still able to clean mags, change springs and followers, etc. after that?  Just wondering as some of the  "standard cap" mags seeme to work better than the 10 rounders.

Nope, the floorplate is epoxied shut-no removal possible. I wouldn't worry too much about changing the springs out due to wear & tear if you are just using this for occasional range practice or home defense.

Nothing in the law says it has to be "permanent".  It merely needs to be "not capable of being readily restored to a capacity of more than ten rounds."

read·i·ly  (rd-l, rdl-)
adv.
1. In a prompt, timely manner; promptly.
2. In a cooperative manner; willingly.
3. In a manner indicating or connoting ease; easily.

30 minutes with hand tool is the standard for that. No magazine - period - is not 'readily restorable" under 9th circuit doctrine.   Thank the guys trying to skirt the fully automatic firearm laws for this, stupid, standard.

30 minutes with hand tool is the standard for that. No magazine - period - is not 'readily restorable" under 9th circuit doctrine.   Thank the guys trying to skirt the fully automatic firearm laws for this, stupid, standard.

Do you have a reference for the court case that shows this doctrine? I am just curious to read the 9th circuit's reasoning on this.

Do you have a reference for the court case that shows this doctrine? I am just curious to read the 9th circuit's reasoning on this.

I don't have it off hand - it's cited some where in the 20+ threads of magazine capacities here.  It was some idiot who modified his gun, then there is constructive possession of assault weapons.   

Here is one: USA v. Brown, which states in it's relevant part that "[f]or purposes of summary judgment, we accept the process and time frame offered by Kelly in his deposition [(which was about 45 minutes) -CB], a two-hour restoration process using ordinary tools, including a
stick weld, is within the ordinary meaning of  “readily restored.” As to the temporal component, two hours, while not an insignificant amount of time, is still within a range that may properly be considered  “with fairly quick efficiency,” “without needless loss of time,” or  “reasonably fast.” As to
the means of restoration, requiring the use of ordinary tools and a stick weld, even by a skilled worker, is likewise within what may properly be considered “with a fair degree of ease,” “without much difficulty,” or “with facility.”

Source: http://law.justia.com/cases/federal/appellate-courts/ca9/04-16049/0416049-2011-02-25.html

There's a few in the 9th as well, I just don't have time to search it out.

The reasoning was pretty much guy was an idiot and douche, and they didn't want him to get away -- so they made a stupid rule.

That works for me. Thanks for the analysis!