But I don't know how to weld any one got any tips or recommend youtube videos?

Let me help you here with some additional information  : Blows my friken mind.

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This is what i sent to HPD :
Message: As per HRS §134-1  Definitions. How does HPD define  a detachable magazine

This is what i got in reply :
The Honolulu Police Department does not define the definition of detachable magazine. The Hawaii Legislature and the Attorney Generals office would define the detachable magazine.  HRS 134-1 refers to characteristics for an Assault Pistol. 

(1)  An ammunition magazine which attaches to the pistol outside of the pistol grip;

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So i contacted the AG's office :
I am having trouble find the answer to a question regarding HRS §134-1. It defines an assault pistol as having a detachable magazine. But does not define what a Detachable Magazine is.
In this case would the definition be the same as used by the ATF for the 1994 assault weapon ban (which Hawaiis law mirrors) or does the state have its own definition ?

This is what i got in reply :
 
In regards to a “detachable magazine,” you are correct that HRS section 134-1 defines “Assault pistol” to mean a semiautomatic pistol which accepts a detachable magazine.  Additionally it goes on to say, “and which has two or more of the following characteristics:
     (1)  An ammunition magazine which attaches to the pistol outside of the pistol grip;
     (2)  A threaded barrel capable of accepting a barrel extender, flash suppressor, forward hand grip, or silencer;
     (3)  A shroud which is attached to or partially or completely encircles the barrel and which permits the shooter to hold the firearm with the second hand without being burned;
     (4)  A manufactured weight of fifty ounces or more when the pistol is unloaded;
     (5)  A centerfire pistol with an overall length of twelve inches or more; or
     (6)  It is a semiautomatic version of an automatic firearm;
but does not include a firearm with a barrel sixteen or more inches in length, an antique pistol as defined in this section or a curio or relic as those terms are used in 18 United States Code §921(16) or 27 Code of Federal Regulations 178.11.”
 
While the Hawaii Revised Statutes does not explicitly define “detachable magazine,” I cannot comment whether Hawaii would mimic the definition used by the ATF.  If a case arose wherein a definition is necessary, the facts would be assessed and dealt with on a case by case situation.  Furthermore, I am prohibited by statute to offer a legal opinion pursuant to HRS section 26-7.

To which i replied: 
Thank you for your prompt reply, Perhaps i can rephrase my question in a way that your office can answer my question. As the cheif legal office for the state, responsible for enforcing violations of state law, How dose your department define the term "Detachable Magazine" in regards to HRS 134-1.

To which i got the response :
As mentioned earlier, while the Hawaii Revised Statutes does not explicitly define “detachable magazine,” I cannot comment whether my office would mimic the definition used by the ATF or provide another definition.  If a case arose wherein a definition is necessary, the facts would be assessed and dealt with on a case by case situation.  Furthermore, I am prohibited by statute to offer a legal opinion pursuant to HRS section 26-7.

To which i responded :
Well i am trying to follow the law but no one seems to know what the law is. The law uses an undefined term, HPD is telling me that the AG (your office) decides what that term means but you are telling me that you do not have a definition and will only define what it is after some one has been accused of a crime. How does that make any sense ? How can some one follow a law when your saying your department makes it up as you go along ? 

I am yet to get a response :

I was under the impression that people were building these and registering them did something change?

People are building them with welded magwells. which you want to do, Thats perfectly fine (even if its a waste of a lower). My information is to show that there is no law or legal definition saying that you have to have a welded lower.

IMO (not to be considered legal advice) you could have a magazine that is able to be disassembled or serviced, As long as you have to use a tool to remove it. The question is do you want to go through the hassel of challenging it in court IF the police decide that in their opinion you are wrong.

My e-mails show that HPD says they have no definition of the law other than what is provided by the AG or the legislators (they do no define law they only pass the text) The AG is saying they do not have a defintion for detachable This would indicate that the law is unenforceable until such time that detachable is defined. 

If I had the money and time I would challenge it along with other aspects of our firearm laws. However at this point in my life don't have the ability to challenge those ambiguous poorly written/ unconstitutional laws. As far AG office  how long ago was you last email

If I had the money and time I would challenge it along with other aspects of our firearm laws. However at this point in my life don't have the ability to challenge those ambiguous poorly written/ unconstitutional laws. As far AG office  how long ago was you last email

Today, should get a response Tuesday or wendsday and if in don't in will. All to remind them.

You might not actually need to weld the magazine in the traditional sense. What about a product like JB weld, essentially a glue of some sort. This would be a gray area as well though since weld is not defined either.

There is one option where you would not have to weld the magazine but the gun would no longer be a semi-auto. Some companies make pump action AR rifles and pistols. So if you built one or bought it, the lower would be registered as a pistol but since it would no longer be semi-auto it would not qualify as an assault pistol and would not have to have a welded magazine. I want to build one someday but haven't gotten around to it. Just some other options to consider.

I think I have a glue stick lying around from elementary school.

Will that pass

They are not assault pistols with the magazine welded in.

I think I have a glue stick lying around from elementary school.

Will that pass

Nope

I don't understand why you couldn't just insert the magazine then make a large plug in place of the release button then plug weld it in place.  The mag will not be able to drop free unless you drill out the plug, that would be the same as pin and welding a muzzle device on the barrel.   It would be just as difficult to remove an aluminum welded mag.   

HPD makes up there own rules, knowing most people don't have the time, funds, or patience to challenge their illegal rulings.

Can you use jb weld?

You might not actually need to weld the magazine in the traditional sense. What about a product like JB weld, essentially a glue of some sort. This would be a gray area as well though since weld is not defined either.

There is one option where you would not have to weld the magazine but the gun would no longer be a semi-auto. Some companies make pump action AR rifles and pistols. So if you built one or bought it, the lower would be registered as a pistol but since it would no longer be semi-auto it would not qualify as an assault pistol and would not have to have a welded magazine. I want to build one someday but haven't gotten around to it. Just some other options to consider.

Just put a 16" barrel on it minus a stock, don't need to change a thing.


AG said it themselves above:

In regards to a “detachable magazine,” you are correct that HRS section 134-1 defines “Assault pistol” to mean a semiautomatic pistol which accepts a detachable magazine.  Additionally it goes on to say, “and which has two or more of the following characteristics:
     (1)  An ammunition magazine which attaches to the pistol outside of the pistol grip;
     (2)  A threaded barrel capable of accepting a barrel extender, flash suppressor, forward hand grip, or silencer;
     (3)  A shroud which is attached to or partially or completely encircles the barrel and which permits the shooter to hold the firearm with the second hand without being burned;
     (4)  A manufactured weight of fifty ounces or more when the pistol is unloaded;
     (5)  A centerfire pistol with an overall length of twelve inches or more; or
     (6)  It is a semiautomatic version of an automatic firearm;
but does not include a firearm with a barrel sixteen or more inches in length, an antique pistol as defined in this section or a curio or relic as those terms are used in 18 United States Code §921(16) or 27 Code of Federal Regulations 178.11.”

Can you use jb weld?

you want to read the threads of people who have actually done it rather than listen to someone who says, "You might not" and thinks they found a "gray area"
or ask hpd firearms division

I don't understand why you couldn't just insert the magazine then make a large plug in place of the release button then plug weld it in place.  The mag will not be able to drop free unless you drill out the plug, that would be the same as pin and welding a muzzle device on the barrel.   It would be just as difficult to remove an aluminum welded mag. 

 you can. people need to stop asking HPD for permission to do stuff.

you can. people need to stop asking HPD for permission to do stuff.

Problem is that if they do not approve they can/will confiscate the lower and you'll have to sue to get it back.

Just put a 16" barrel on it minus a stock, don't need to change a thing.

a 16 inch barrel makes it a rifle ? as a pistol is defined as any firearm with a barrel less then 16 inchs
"Pistol" or "revolver" means any firearm of any shape with a barrel less than sixteen inches in length and capable of discharging loaded ammunition or any noxious gas.

OR

would a pistol with a 16 inch barrel be classified as a "Firearm" as it does not and has never had a stock ?

Problem is that if they do not approve they can/will confiscate the lower and you'll have to sue to get it back.

If you want rights you have to be willing to fight for them. That being said....

take in a stripped lower. They can not make a determination that it is an assault pistol because the firearm does not have an action, barrel, hand guard or heat shield, detachable or attached magazine ect......
Configure it any way you want after the fact.

ask hpd firearms division

Get a big dog..........

People need to stop letting  HPD eroding their right based on there ideals. HPD has stated in the e-mails above that they do not make the determination on what Detachable means, they get their direction from the AG and legislators. the AG says they dont have one and legislators cant not make a indention outside of the wording in the law. So any information regarding a detachable magazine you get from HPD is wrong or a lie.

I've shot a friend's AR pistol that had a Magpul mag, or some other polymer mag.  I didn't ask them how it was secured since I have no interest in building one myself, but it sure wasn't coming out. 

Personally, I think AR pistols are cool and fun to shoot, but I just have no desire to build or own one.  That said, I wouldn't mind doing some testing with one to see what the muzzle velocity and accuracy is like compared to a 16" barreled AR.