AR 15 lower/upper complete?

[Kv386]

delete

[Kv386]

Building an AR 15?

moved.

[Oldmandan]

1. To use a 11,5” upper, you would need to have minimum 5.1” muzzle device welded to it. 16” is the minimum barrel length. It would need to be muzzle brake if your intention is featureless, flash hider is ok if your intention is to use a mag lock

2. Buying an upper and lower and snapping them together is not “building”. Building would be buying every part separate and putting it all together

[Kv386]

1. To use a 11,5? upper, you would need to have minimum 5.1? muzzle device welded to it. 16? is the minimum barrel length. It would need to be muzzle brake if your intention is featureless, flash hider is ok if your intention is to use a mag lock

2. Buying an upper and lower and snapping them together is not ?building?. Building would be buying every part separate and putting it all together

Hi, So if I was to purchase a 5.1" muzzle device, it needs to be welded on? I was under the impressive that it can be screwed onto the barrel? I am planning on using a maglock so I can retain a regular grip.

[200Apples]

You'll be better off posting your query in the Centerfire Rifles - Semiautomatic or Gas Operated subforum.

[Kv386]

AR 15 lower/upper complete?

Hello, I recently purchased a Daniel Defense AR 15 for my first rifle and now I am interested in building an AR for my second rifle. I was wondering, if I get a complete Upper and complete Lower, is that all that is needed? Is it that simple by just mating a complete Upper to a complete Lower? The upper I am looking at is the Colt EPR 11.5" barrel and I am planning on pairing it with an Aero Precision lower. Do you guys think I will have any problems with this set up? Will there be any issues with the shorter 11.5" barrel?

[eaglemike]

Combining them isn't going to be Ca legal. You really want to do more research regarding laws.
If you can get a pistol lower DROS'd to you via PPT that is one thing. Buying those 2 and then combining them isn't going to work - unless you get the lower DROS'd to you as a pistol lower.
This isn't legal advice in any way. All actions you take are your own responsibility.

[Tere_Hanges]

Functionally it should work.

Legally, you would be breaking Federal and State laws by assembling a Short Barrel Rifle, which are illegal in CA and require a Federal tax stamp in states where SBRs are legal.

[golfish]

Hello, I recently purchased a Daniel Defense AR 15 for my first rifle and now I am interested in building an AR for my second rifle. I was wondering, if I get a complete Upper and complete Lower, is that all that is needed? Is it that simple by just mating a complete Upper to a complete Lower? The upper I am looking at is the Colt EPR 11.5" barrel and I am planning on pairing it with an Aero Precision lower. Do you guys think I will have any problems with this set up? Will there be any issues with the shorter 11.5" barrel?

You should at the very least try and build the lower.

The only problems and issues your going to have is with the law..

[waygeekierthanu]

There are legal ways to accomplish this, but you would need to get the lower via SSE 2.0. We can help you do that, but as others have said functionally you could do it yourself, but practically just buying it and slapping it together is illegal.

Sent from my SM-G781U1 using Tapatalk

[Oldmandan]

Hi, So if I was to purchase a 5.1" muzzle device, it needs to be welded on? I was under the impressive that it can be screwed onto the barrel? I am planning on using a maglock so I can retain a regular grip.

Yes, the regs state it must be permanent. Pinned and welded is the norm. although you could also silver solder if you wanted

[Kv386]

If I decide to get a 14.5" barrel, is this illegal?

[19K]

If I decide to get a 14.5" barrel, is this illegal?

If it?s pinned and welded to 16in.

Can you slap together any upper and lower and have it work? Yes, for the most part it?s that simple.

Is it legal? Depends on the configuration.

[Quiet]

OP's multiple threads on same topic merged together

Under Federal laws...

In order to be a legal Title 1 Rifle, the firearm must have a rifled barrel length of 16" or greater.

A rifle with a rifled barrel length of less than 16" is a Title 2 SBR and requires BATFE approval to make (Form 1, $200 tax stamp).
Unless you have BATFE approval, it is a Federal felony to make or possess an illegal SBR.

If the barrel length is less than 16", then a muzzle device needs to be permanently attached in order to legally increase the barrel length to meet the minimum 16" requirement.
^This needs to be done before it is attached to the rifle.
~Having all the parts to make a SBR is still considered being in possession of a SBR.

Permanent methods of attachment include full-fusion gas or electric steel-seam welding, high-temperature (1100?F) silver soldering, or blind pinning with the pin head welded over.

Barrels are measured by inserting a dowel rod into the barrel until the rod stops against the closed bolt or breech-face. The rod is then marked at the furthermost end of the barrel or permanently attached muzzle device, withdrawn from the barrel, and measured.


Under CA laws...

In order to be an eligible CA legal rifle, the firearm must have a rifled barrel length of 16" or greater.

If the barrel length is less than 16", then a muzzle device needs to be permanently attached in order to legally increase the barrel length to meet the minimum 16" requirement.
^Permanent methods of attachment include full-fusion gas or electric steel-seam welding, high-temperature (1100?F) silver soldering, or blind pinning with the pin head welded over.
~Barrels are measured by inserting a dowel rod into the barrel until the rod stops against the closed bolt or breech-face. The rod is then marked at the furthermost end of the barrel or permanently attached muzzle device, withdrawn from the barrel, and measured.

In order to be considered a CA legal semi-auto centerfire rifle, the rifle must have a minimum overall length of 30".
~Overall length is measured with the rifle in the shortest possible firing configuration (stock folded/collapsed) and non-permanently attached muzzle device removed.

In order to be considered a CA legal semi-auto centerfire rifle, the rifle must not have any restricted features (pistol grip, flash suppressor, forward pistol grip, folding/telescoping stock, thumbhole stock, grenade/flare launcher) or must operate from a fixed 10 or less round magazine.