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Centerfire Rifles - Semiautomatic or Gas Operated Centerfire rifles, carbines and other gas operated rifles.

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  #1  
Old 12-17-2006, 8:27 PM
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Default What tools do I need to build an AR-15?

I should be able to pick up my Stag lower and Stag LPK sometime this week. What kind of tools would I need to install the LPK, the stock, and the upper?

Also what would you suggest for a fixed mag kit? I was thinking about the Prince50 kit and i'll probably buy that if it's easy to install.
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  #2  
Old 12-17-2006, 8:29 PM
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Your hands, a screwdriver, a hammer, and patience. You will need a stock wrench if you're using a CAR stock.


Roll pin punches can help, but are not necessary.

No need to worry about working on uppers right now.
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  #3  
Old 12-17-2006, 8:37 PM
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I assume you mean build a "SLR-15" or "Stag 556" not an AR-15 .

I used a regular $10 punch set ,a light weight hammer ,a $5 pivot pin tool , a car wrench and some blue painters tape to protect the finish .
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  #4  
Old 12-17-2006, 9:05 PM
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Quote:
Originally Posted by gg77
Also what would you suggest for a fixed mag kit? I was thinking about the Prince50 kit and i'll probably buy that if it's easy to install.
The Prince50 is VERY easy to install. I highly recommend it.
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  #5  
Old 12-17-2006, 9:06 PM
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I have a prince 50 on both my rifles. Easy to install and effective.
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  #6  
Old 12-17-2006, 9:23 PM
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A light weight hammer to install the pins. Be sure to use painter's tape to protect the receiver from scratches. Other than that ARs are erector sets and are easily hand assembled.
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  #7  
Old 12-17-2006, 9:39 PM
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The only specific tool I still don't have is the one to lock down the buttstock.... I use visce grips and a towel..
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  #8  
Old 12-17-2006, 9:42 PM
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Step by step instructions on arfcom: http://www.ar15.com/forums/topic.html?b=3&f=4&t=226782
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  #9  
Old 12-17-2006, 10:55 PM
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I did a stag with a stag LPK using a small brass punch, a toothpick, tweezers, pliers, and used my feet as a "vice".

You don't need any special tools, but I'd imagine they'd help.
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  #10  
Old 12-18-2006, 12:02 AM
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Thanks for the advice
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  #11  
Old 12-18-2006, 1:27 AM
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I did the same build. Stag lower and LPK...I also added a Houge grip.
I'd say maybe some CLP to clean and lube everything all up.
Let's see...all I used was a small hammer, tape to protect the lower while tapping the pins in, a small pin punch to make the pins flush or even, the back of a ball point pen to hold prince 50 button in (since I left the spring in) while installing the mag catch, a screwdriver to install the grip and a few cleaning cloths or rags.
Oh..and a digital camera to take some picture of your first build.
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  #12  
Old 12-18-2006, 5:28 AM
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Here is what I use and I build a lot of these.

Lyman Hammer & Punch Set

Lyman 4 piece Roll Pin Punch Set

The only other thing you need is a long standard screwdriver for the Stag LPKs or a long Allen wrench/driver for the RRA LPKs. I don't tape anything because I use the plastic part of the hammer to start the roll pins and I use the roll pin punches to finish them. I don't use anything fancy to get the pivot detent pin and pivot pin into place, it is all about technique. I don't use anything else.
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  #13  
Old 12-18-2006, 7:30 AM
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Add a large clear plastic bag.

When you put in the pivot pin do it inside the plastic bag so you can catch the spring and detent when it goes flying.

My gun room has eaten three detents.
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  #14  
Old 12-18-2006, 8:16 AM
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Quote:
Originally Posted by tenpercentfirearms
Here is what I use and I build a lot of these.

Lyman Hammer & Punch Set

Lyman 4 piece Roll Pin Punch Set

The only other thing you need is a long standard screwdriver for the Stag LPKs or a long Allen wrench/driver for the RRA LPKs. I don't tape anything because I use the plastic part of the hammer to start the roll pins and I use the roll pin punches to finish them. I don't use anything fancy to get the pivot detent pin and pivot pin into place, it is all about technique. I don't use anything else.
ROLL PIN punches are worth their weight in gold, so if you are building, I highly recommend getting a set.
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  #15  
Old 12-18-2006, 8:50 AM
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Yet another vote for roll pin punches. A nice brass punch is great for getting in a stubborn trigger guard roll pin.

Masking tape at strategic positions is also nice to protect the finish of your receiver while hammering on roll pins.

Last edited by kap; 12-18-2006 at 8:52 AM..
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  #16  
Old 12-18-2006, 9:18 AM
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A block of wood too! The screwdriver should be fairly large size depending on your grip I guess. Masking tape (stick it to your shirt first to make it less sticky) and a shop rag definitely helps!

I found the punches to be of great help not only on the roll pins but on aligning the trigger group, and working the pivot pins out the first couple of times. Get the $12 set of 6...

A Prince50 lock will do fine.

We're assuming your upper is fully assembled? If not, you'll need various tools for that too.
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  #17  
Old 12-18-2006, 9:23 AM
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Quote:
Originally Posted by Fjold
Add a large clear plastic bag.

When you put in the pivot pin do it inside the plastic bag so you can catch the spring and detent when it goes flying.

My gun room has eaten three detents.
THAT RIGHT THERE IS THE BEST ADVICE YET.....

I got some ziplock "Big Bags" from Costco, definitely saved me from having to buy additional detents.....
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  #18  
Old 12-18-2006, 9:42 AM
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Quote:
Originally Posted by Mark_in_Pasadena
THAT RIGHT THERE IS THE BEST ADVICE YET.....

I got some ziplock "Big Bags" from Costco, definitely saved me from having to buy additional detents.....

+1

I used a large plastic bag also. If I hadn't there is no way I would be able to find the detent or spring. Great advice!

The only problem I ran into was all my allen wrenches were to short to fit down the pistol grip to attach it. But you went with a Stag LPK so no worries as long as you have a screwdriver.
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  #19  
Old 12-18-2006, 10:13 AM
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The method I use for installing the pivot detent pin has never resulted in a flying pin, not once. I have never installed an LPK in a plastic bag.

All you do is use your left hand fingers to hold the detent pin in line with the spring and hole. You use your right hand and the side of the pivot pin to push the detent pin into the hole. Once it is aligned right and going in, keep pusing until the pivot pin can go down into its own hole. Rotate the pivot pin until the detent enters its grove and its done. If I am not in front of a customer and not bragging about it, this takes all of 20 seconds. I think the longest it took once was 5 minutes and the average is about 1 minute.
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  #20  
Old 12-18-2006, 10:16 AM
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Quote:
Originally Posted by Fjold
Add a large clear plastic bag.

When you put in the pivot pin do it inside the plastic bag so you can catch the spring and detent when it goes flying.

My gun room has eaten three detents.

Here we go.... Where have been before? My garage ate couple of those.....
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