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80% lower build
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 Posted: Mon Mar 20th, 2017 06:38 PM
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swampratt
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Joined: Mon Nov 30th, 2009
Location: Yukon, Oklahoma USA
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I must join the crowd sometimes as much as I hate it.
I am building an AR 15 with an 80% lower made of  aluminum.


I got the upper for $359 (stainless barrel) 5.56 16" and all the parts needed to complete the gun except the 29 dollar lower.

I machined the lower out and today I am trying my hand at anodizing.

I learned the thin stainless wire i chose to use was too thin and melted in 2 and left marks on the lower..OH well.
I really just want to see if it will take color at all.
So I grabbed some 1/8" lead free silver solder off the wall in the garage and ran it through one of the trigger guard holes.
She is now cooking in the acid bath and the lower is getting frosty looking.. it may or may not work.

I will keep you guys posted on how it works out.. new learning experience for me.

Amperage is slowly dropping on the charger the longer it cooks so it might work.

Unless it is just my silver solder wire doing the cooking.
 

 



 Posted: Mon Mar 20th, 2017 07:39 PM
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2nd Post
swampratt
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Joined: Mon Nov 30th, 2009
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First observation is:  I need thick  aluminum wire my solder broke also.
But cook time may have been long enough to get some sort of color.

Second observation: Rit dye even though it stated liquid has some tiny chunkies in it.
You need to mix it with water and let it set  a little while and mix again.

I may get darker spots that look like dust in a paint job.

I do not think it will take the black all the way and I heard black may be bronze.
 



 Posted: Mon Mar 20th, 2017 07:52 PM
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3rd Post
SavageShooter



Joined: Mon Feb 15th, 2010
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lol, remember what I like to post...



:worthless:



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 Posted: Mon Mar 20th, 2017 08:13 PM
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4th Post
swampratt
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Joined: Mon Nov 30th, 2009
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here is the finished product.
Kind of bronze.

I just wanted to do this to protect the bare aluminum.

Notice the small black specs.. I should have mixed the solution for longer than a few seconds. My bad.
Of course I also read this home anodizing does not take well to 7000 series aluminum.
I think these are 7075 T6.
here is a link to before.
http://www.tacticalmachining.com/80-products/80-ar15-lower-receivers.html




Attachment: anodized aluminum 002.JPG (Downloaded 68 times)

Last edited on Mon Mar 20th, 2017 08:16 PM by swampratt



 Posted: Mon Mar 20th, 2017 08:55 PM
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5th Post
Ozark Ed



Joined: Mon Jan 30th, 2012
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Give it a catchy name like Weathered Carhartt Bronze and pretend like you meant to do it like that.



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 Posted: Mon Mar 20th, 2017 09:06 PM
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6th Post
swampratt
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Joined: Mon Nov 30th, 2009
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I like that name. HA! may use it if I can remember it. or  Faded Doe


I read a lot of stuff on this anodizing at home and knew no way it would be black I expected this color..looks like some AN fittings for the color.

Can't scratch it.. that is a good thing.
At least with my fingernails..I tried pretty hard to scratch it.

I kept my solutions and I have another lower to mill out. and maybe my buddy will want one of his done.

Practice practice.

Last edited on Mon Mar 20th, 2017 09:07 PM by swampratt



 Posted: Mon Mar 20th, 2017 09:47 PM
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7th Post
ghrit



Joined: Fri Apr 14th, 2006
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That piece is WRONG!!! It's upside down!! Wassup wid dat? (Color is nice, and to my mind, the shading is an advantage for camo reasons ---)



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 Posted: Mon Mar 20th, 2017 11:14 PM
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8th Post
swampratt
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Upside down..NO! I was practicing hanging from a tree by my legs and shooting it.

I only say that because my first deer with a bow I was hanging sideways from a tree limb by my legs. No sights on the bow just shooting by instinct.
Drilled him ..went 40 yards and piled up behind my son who was sleeping on a log.
Never woke him up.

It would be good for camo!



 Posted: Tue Mar 21st, 2017 01:23 AM
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9th Post
RobertMT
Master Handloader


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I've thought about 80% before, but with lowers running $40-50, never took the plunge.

If you don't have it already LPK $30, you just missed out on the $20 ones. http://www.midwayusa.com/product/239400/ar-stoner-complete-lower-receiver-parts-kit-ar-15



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 Posted: Tue Mar 21st, 2017 10:25 AM
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10th Post
swampratt
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Joined: Mon Nov 30th, 2009
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I paid 29 for my lower. Right here.
http://www.tacticalmachining.com/80-products/80-ar15-lower-receivers.html

PSA for the other parts in a kit for 359.



 Posted: Tue Mar 21st, 2017 12:22 PM
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11th Post
swampratt
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Joined: Mon Nov 30th, 2009
Location: Yukon, Oklahoma USA
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It will scratch,,If you gouge it with pliers while installing roll pins..I know first hand.
I done went and messed up the finish.



 Posted: Tue Mar 21st, 2017 05:54 PM
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swampratt
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I took it out today and used my normal bolt gun loads H4895 26gr and CCI450 this time in LC16 cases, 55 v max flat base seated so long they almost did not fit the magazine 2.275".

Anyway first 2 shots at 25 yards to get scope on paper .345" center to center.
3 at 50
Off to 100 yards and shot a 4 shot group 1.028" center to center.
Adjusted scope to bring it down , then to the right.

Shot a 3 shot group there .704" center to center. 10-15 mph winds.
Shot as fast as I could get back on target. all from the magazine .. no jams or any shenanigans.
Pretty happy with it so far.. really need to make a tall rest (bean bag) for it.

$39 Tasco scope 3-9 x 40 with balistic reticle.. and the thickness is just right.



Attachment: ar 001.JPG (Downloaded 43 times)



 Posted: Wed Mar 22nd, 2017 02:28 PM
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SavageShooter



Joined: Mon Feb 15th, 2010
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I REALLY LIKE that color on the completed AR. I think I'd get my Mags Cerakoted to match the lower. All in all, I like it better than had it been black.



____________________
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― Ronald Reagan


 Posted: Wed Mar 22nd, 2017 07:07 PM
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14th Post
ghrit



Joined: Fri Apr 14th, 2006
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SavageShooter wrote: I REALLY LIKE that color on the completed AR. I think I'd get my Mags Cerakoted to match the lower.Go carefully with the Cerakote, it adds thickness that may not make you happy fitting into the mag well.  But yup, the color is top shelf.



____________________
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 Posted: Wed Mar 22nd, 2017 08:58 PM
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15th Post
RobertMT
Master Handloader


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Did you do it on mill or drill it out? It looks like real clean job of machining. The only one's I've seen, have used set of templates and drills, they looked it too.

As well, as that turned out, might look into 1911 80%.



____________________
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MSM = sources of misinformation, approved by those currently in power.

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 Posted: Thu Mar 23rd, 2017 12:59 AM
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16th Post
swampratt
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Joined: Mon Nov 30th, 2009
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Thanks guys I thought about the color of the mag for about a second.. then I remembered I am cheap.
I will run it like it is for now and concentrate on holding it and shooting it accurately.. thing feels very odd compared to my bolt guns.

Used a mini mill from harbour freight. Took about 6 hours to complete.
Was not trying to rush it at all. Bits never got warm.

I let them do the cutting not trying to force them..
I seen some 80% glock frames but looks like a completed gun would cost more than buying a gun.

Maybe I have not found the cheaper priced parts.

The magazine is steel and I may cold blue it if anything.

I want to cut one shorter to be legal for hunting in oklahoma and I do not really care for the thing hanging down that far.. Looks odd to me.. gets in the way.

Maybe I am just not used to the AR thing.



 Posted: Thu Mar 23rd, 2017 02:03 AM
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17th Post
ghrit



Joined: Fri Apr 14th, 2006
Location: Endless Mountains, Pennsylvania USA
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swampratt wrote:


I want to cut one shorter to be legal for hunting in oklahoma and I do not really care for the thing hanging down that far.. Looks odd to me.. gets in the way.

Maybe I am just not used to the AR thing.
You may be highly skilled or not, but shortening a mag is not a trivial task.  Being a tightwad my self, I understand the approach.  But for SURE buying one shorter will be a lot more satisfactory.  They are easy to find in just about ANY length.

And yes, they are strange handling for a few minutes ---



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-There are two kinds of ships: Submarines and targets


 Posted: Thu Mar 23rd, 2017 02:49 AM
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18th Post
Shooter Sam
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Looks good to me ! :thumbs:



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 Posted: Thu Mar 23rd, 2017 11:27 AM
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19th Post
swampratt
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Joined: Mon Nov 30th, 2009
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My issue is with the Hunting rules for deer in this state ..any 22 caliber center fire semi automatic rifle may not have a magazine capable of holding more than 7 rounds of ammunition.

So I am at a spot in the road that has no other turns for me.

I have not found a steel magazine that only holds 7 rounds.
I think I need the thin steel as the first test with this gun I just used my bolt gun loads 2.275" long,, those do not fit into plastic magazines.

If it shoots accurate with these rounds I do not need to change ammo specs from bolt to this AR.

I will try seating different lengths and see what happens though.

I figured I would cut the bottom off and leave 4 ears to hold the bottom guts just like it is now, then cut the spring accordingly..



 Posted: Thu Mar 23rd, 2017 07:10 PM
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RobertMT
Master Handloader


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There are many mags that hold five rounds.

http://www.midwayusa.com/product/2228111195/ar-stoner-magazine-ar-15-223-remington-with-anti-tilt-follower-stainless-steel

Or make your own seven round, from ten round
Just block internally to seven round.

Both the ten round and five round use the same length body, five round just uses taller follower.

If you need longer OAL, cut front of mag, not my pic, but shows where to cut/mill mag.

Attachment: extendedOAL.jpg (Downloaded 21 times)



____________________
Fake news sites = sources of information, not censored by those currently in power.

MSM = sources of misinformation, approved by those currently in power.

It's only a conspiracy theory, if it's not true.

Citizens are armed, subjects aren't.


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