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How to Assemble an AR-15 Lower Receiver


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#1 1st cav sgt ret

1st cav sgt ret

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Posted 20 January 2007 - 04:35 PM

Found this link to AR15Armory decent website lots of information on AR15's

assembeling an AR15 lower receiver

There is however a mistake in the picture's with the hammer spring being installed backward's,the spring leg's should run toward's the front,down and across the trigger retaining pin to hold the trigger retaining pin in place

~~~~ Scurry TX ~~~~

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#2 1st cav sgt ret

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Posted 21 January 2007 - 11:14 AM

And why would you want to build your own AR-15
read Here and read Here

M&A part's has some nice stuff

~~~~ Scurry TX ~~~~

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#3 Ken TN

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Posted 18 March 2007 - 08:24 PM

Sarg,
Great info thanks for the links. I am trying to find a few lowers this week in TN to build up for a calling rifle.
While in Sweetwater, TX at the gun show I was told my old AR might be worth more than I thought...
SP1 with SN 004XX.
Looks like I might have to find a collector and see how much it is worth. Never know it could provide funds for many more AR parts.

Thanks
Ken TN

#4 1st cav sgt ret

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Posted 24 March 2007 - 06:39 AM

From Bushmaster Technical Page

Assembling a lower receiver is not really that big a deal, it will, however, go much smoother if you make a few tools to help you along. The first thing that makes assembly easier is some way of holding the receiver while you are working on it. We sell an excellent tool for this, but an old junk magazine with some wood stuffed inside it will work if you clamp it in something (a vise). The military manual has blueprints for some extra tools in the back, these can come in handy. Some of those tools we use here. Some other tools we use here are called slave punches. Now, this will be old stuff to some of you, but bear with me. A slave punch is just a punch with a hole in the end to hold a roll pin and get it started in the hole it's supposed to go into. Brownell's (515-623-4000) sells these, or they are easy to make. We use a different slave punch for every roll pin in the rifle. Some pins are the same size, but as they go in different places, we use a different punch for each one, one with an end specially shaped so as not to leave a mark on the finish in that area. We make the ones we use here out of stainless round stock, but they can be made out of just about anything. These are what let us assemble without leaving marks all over the place. The military manual shows all the assembly and disassembly necessary to work on these rifles in good detail and with pretty good illustrations. It is important to update your manual every few years, as the new changes keep coming. The new A-2 manual, for instance, has the complete section for the M-4 carbine, covering the tele-stock assembly and specific parts list. They keep changing things too, like the setting of the elevation dial on the A-2 rear sight. Some common problems with assembly are forgetting to insert the disconnector spring, placing the tails of the hammer spring under instead of over the trigger pin, losing the takedown pin detents, and putting the bolt catch spring in the disconnector spring pocket. These are all very simple mistakes, but they will cause major malfunctions down the road. Fortunately, they are easy to fix, if you are looking for them. Installing the hammer spring backwards is another popular mistake. Not a problem, as it's easily corrected. Again, the manual or the assembly video will show you the mistake. Losing the buffer retainer and spring is another popular one. If you are installing or removing the stock assembly (or receiver extension), you have to hold on to that little sucker, or it will fly! Always support the ears of the trigger guard when installing Roll Pin with a piece of wood to prevent breaking off the ear.

~~~~ Scurry TX ~~~~

Now is Not the Time to send a Message of Weakness,Now is the Time to Send a Message of Strength and Unity


#5 1st cav sgt ret

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Posted 21 July 2007 - 05:42 AM

Some additional information
http://www.gunsnet.n...ad.php?t=238091

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#6 nunya

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Posted 21 July 2007 - 06:00 AM

Here's a link from the AR-15.com forum that does a fairly good job of explaining assembly proceedures with pics.

http://www.ar15.com/...&...=4&t=226782

#7 1st cav sgt ret

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Posted 21 July 2007 - 06:38 AM

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#8 Bobcat

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Posted 08 December 2008 - 09:10 AM

Here is an excellent video on field stripping and reassembly of an AR-15.

Bob :P

Field Stripping Link

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