Shotgun MAg extention

[apes]

Is it legal in calif to install an extended mag tube on a shotgun used for home defense, not hunting

[P5Ret]

As long as you do not exceed 10 rounds in the tube you're good.

[buttfish]

My Mossberg 20/20 has a variety loaded in the tube for HD. Slug/OO/OOO/2/4/6, but not in an order.

[bohoki]

As long as you do not exceed 10 rounds in the tube you're good.

with minishells it can get complicated what holds 7 3 inchers could hold 12 minis

[ar15barrels]

As long as you do not exceed 10 rounds in the tube you're good.

Please show us where in the law it states that a fixed shotgun magazine tube can not hold more than 10 rounds.

It's NOT in PC30515 if you were thinking it was.

[ar15barrels]

with minishells it can get complicated what holds 7 3 inchers could hold 12 minis

Not really, because there is no capacity limit for fixed magazines on shotguns.
Also, magazine capacity would be checked with the shells that the barrel is marked to accept.
That's usually going to be 2-3/4" or 3" or 3-1/2" shells in the case of 12ga.

There are IMPORT restrictions, but not possession restrictions.
So you can not IMPORT a shotgun that holds more than 5 rounds in a fixed magazine tube because it does not meet the "sporting uses" requirement, but you can indeed convert one to hold more than 5 rounds after it is in the USA.

[Notpc]

My Mossberg 20/20 has a variety loaded in the tube for HD. Slug/OO/OOO/2/4/6, but not in an order.

That's nice. But what does that have to do with the OP's question about the legality of increasing the shotguns capacity with a tube extension?

ETA: Thanks ar15barrels for the great clarification on the shotgun capacity law/rule.

[sbo80]

legality aside, a tube that holds 10+ 12ga is long, not to mention heavy when full. It would be quite unwieldy to use indoors if the point is home defense. I have one setup for competition with a 9rd tube and it is nearly the longest firearm I own. I think the only thing I have longer is a M91 Mosin, and that sucker has a 31" barrel.

[ar15barrels]

legality aside, a tube that holds 10+ 12ga is long, not to mention heavy when full.
It would be quite unwieldy to use indoors if the point is home defense.
I have one setup for competition with a 9rd tube and it is nearly the longest firearm I own.

Absolutely!
Home defense shotgun barrel should be no longer than 18" and should have 6 round mag tube or 21" with a 7 round tube.

[Quiet]

Please show us where in the law it states that a fixed shotgun magazine tube can not hold more than 10 rounds.

It's NOT in PC30515 if you were thinking it was.

PC 32310(a)

CA large capacity magazine laws apply to fixed tubular magazines on shotguns. [PC 16740]
^Exemption to this for lever-action shotguns. [PC 16740(c)]

Therefore...

While in CA, it is illegal to make a fixed tubular magazine, for a bolt-action shotgun or pump-action shotgun or semi-auto shotgun, have a capacity of greater than 10 rounds. [PC 32310(a)]

It is illegal to import, advertise for sale, or transfer a fixed tubular magazine with a capacity of greater than 10 rounds, for a bolt-action shotgun or pump-action shotgun or semi-auto shotgun, in CA. [PC 32310(a)]

It is illegal to make, import, advertise for sale, or transfer magazine extensions for fixed tubular magazines, for a bolt-action shotgun or pump-action shotgun or semi-auto shotgun, that can increase the capacity to be greater than 10 rounds. [PC 32311(a)]

It is legal to make, import, advertise for sale, or transfer a fixed tubular magazine with a capacity of greater than 10 rounds for a lever-action shotgun. [PC 16740(c)

It is legal to make import, advertise for sale, or transfer magazine extensions for a fixed tubular magazine for a lever-action shotgun that can increase the capacity to be greater than 10 rounds. [PC 16740(c)]


Note that current possession of fixed tubular magazine for a non-lever-action shotgun that holds more than 10 rounds is CA legal, if it was legally obtained before the ban or during "Freedom Week" or via exemption (LEO, etc).




Penal Code 16740
As used in this part, “large-capacity magazine” means any ammunition feeding device with the capacity to accept more than 10 rounds, but shall not be construed to include any of the following:
(a) A feeding device that has been permanently altered so that it cannot accommodate more than 10 rounds.
(b) A .22 caliber tube ammunition feeding device.
(c) A tubular magazine that is contained in a lever-action firearm.

Penal Code 32310
(a) Except as provided in Article 2 (commencing with Section 32400) of this chapter and in Chapter 1 (commencing with Section 17700) of Division 2 of Title 2, any person in this state who manufactures or causes to be manufactured, imports into the state, keeps for sale, or offers or exposes for sale, or who gives, lends, buys, or receives any large-capacity magazine is punishable by imprisonment in a county jail not exceeding one year or imprisonment pursuant to subdivision (h) of Section 1170.
(b) For purposes of this section, “manufacturing” includes both fabricating a magazine and assembling a magazine from a combination of parts, including, but not limited to, the body, spring, follower, and floor plate or end plate, to be a fully functioning large-capacity magazine.

Penal Code 32311
(a) Except as provided in Article 2 (commencing with Section 32400) of this chapter and in Chapter 1 (commencing with Section 17700) of Division 2 of Title 2, commencing January 1, 2014, any person in this state who knowingly manufactures or causes to be manufactured, imports into the state, keeps for sale, or offers or exposes for sale, or who gives, lends, buys, or receives any large capacity magazine conversion kit is punishable by a fine of not more than one thousand dollars ($1,000) or imprisonment in a county jail not to exceed six months, or by both that fine and imprisonment. This section does not apply to a fully assembled large-capacity magazine, which is governed by Section 32310.
(b) For purposes of this section, a “large capacity magazine conversion kit” is a device or combination of parts of a fully functioning large-capacity magazine, including, but not limited to, the body, spring, follower, and floor plate or end plate, capable of converting an ammunition feeding device into a large-capacity magazine.

[L84CABO]

Keep in mind imported shotguns are subject to Federal Law 922r and are limited to 5 rounds at the factory. Benelli m4's, for example, fall under this.

You can, however, add an extended tube to an imported shotgun but it may require you to change some additional parts to keep the gun 922r compliant.

It's a pretty silly law, a little bit complicated, and some people feel the law doesn't apply to end users. If you're not talking about an imported shotgun, there's no point getting into this. But you didn't mention what your gun was so it's worth noting...and something to be aware of should you ever buy an imported shotgun.

[SkyHawk]

with minishells it can get complicated what holds 7 3 inchers could hold 12 minis

DOJ has a memo, the shell size used to count is 2.75" unless the shotgun is marked to take a longer or shorter round, in which case the marked round length is used for the count. If a shotgun is marked to use a shorter shell, it is only used for the count if the marking is the only shell size marked.

You can see the document here

https://www.calguns.net/calgunforum/attachment.php?attachmentid=566328&d=1481910200

Magazine capacity for shotguns shall be based upon shotgun shells that are 2 3/4”, which shall be the default standard if the firearm is not marked to indicate another shotgun shell standard. If a particular firearm is marked to indicate another shotgun shell standard, then the magazine capacity for that firearm shall be based upon those markings. Shotgun shells shorter than the default standard may only be used to determine magazine capacity if a firearm is specifically marked to accept this shell exclusively.