Stripped upper and lower set.

Polinese · October 12, 2012, 04:49 PM

Who makes a good stripped upper and lower receiver set, that also actually has some in stock. Seems like most ar parts have been sold out all over the place for quite a while.

DasGuy · October 12, 2012, 05:36 PM

This is one place where it's really hard to go wrong. A reciever is a reciever.

I have a set from DPMS and a set from Aero Precision. No complaints with either.

Are you looking for a standard forged reciever or billet?

Polinese · October 12, 2012, 05:37 PM

Was looking at forged. After I posted I found the blemished ones on PSA... upper and lower for the price of one pretty much.

djcantr · October 12, 2012, 05:55 PM

Quote:

Originally Posted by Polinese

Was looking at forged. After I posted I found the blemished ones on PSA... upper and lower for the price of one pretty much.

I bought four blemished stripped lowers from PSA. Two I can't find blemishes on. The other two have such small blemishes on them that I'd likely ding them more than that the first time shooting them or even during assembly. I ordered a couple blemished stripped uppers yesterday. They're hard to beat for the price. Good choice.

DASHZNT · October 12, 2012, 06:24 PM

Please tell me where you bought the uppers from... i would like to get started on my upper project and i gotta start somewhere and sometime!!

DASHZNT

djcantr · October 12, 2012, 06:56 PM

http://palmettostatearmory.com/index...-receiver.html

greentick · October 13, 2012, 03:59 PM

I also got a couple each of blemmed PSA uppers and lowers. No blem to be found...

madcratebuilder · October 14, 2012, 08:03 AM

I don't agree with the "reciever is a receiver" statement. Lets set aside the forged vs billet and look at forged 7075 receiver sets. The most obvious differences are in the finish. Three types of finish used are:

Hardcoat Anodize, or "Hard anodic coating" this is called "MIL-A-8625, Type III, Class 1 or Class 2" This anodic coating has a thickness 0.002” ± 0.0002, it has a dye added for the finish color.

Sulfuric Anodize, this is "MIL-A-8625 Type II, Class 1 or Class 2". This is a Anodic film on aluminum, dye is used for color.

Hardcoat Anodize w/Teflon this is "MIL-A-63576, Type I"

Type II = Sulfuric Acid Anodize
Type III = Sulfuric Acid Hardcoat Anodize
Class 1 = Non-dyed Coatings
Class 2 = Dyed Coatings (color to be specified)

Everything today is Class 2, dye added. Type III well cost a bit more as well the Teflon additive.

Manufacturers should list the type and class of finish.

The added dye is the reason we see different finish colors.

Now lets add lowers that can except ambi controls or 45* safety selectors. Compare mag well bevels.

Even more difference with billet receiver sets.

A "receiver is a receiver" is not always a receiver.

October 12, 2012, 04:49 PM	#1
Polinese Senior Member Join Date: September 27, 2010 Posts: 245	Stripped upper and lower set. Who makes a good stripped upper and lower receiver set, that also actually has some in stock. Seems like most ar parts have been sold out all over the place for quite a while.

October 12, 2012, 05:36 PM	#2
DasGuy Senior Member Join Date: January 29, 2011 Posts: 260	This is one place where it's really hard to go wrong. A reciever is a reciever. I have a set from DPMS and a set from Aero Precision. No complaints with either. Are you looking for a standard forged reciever or billet?

October 12, 2012, 05:37 PM	#3
Polinese Senior Member Join Date: September 27, 2010 Posts: 245	Was looking at forged. After I posted I found the blemished ones on PSA... upper and lower for the price of one pretty much.

October 12, 2012, 06:24 PM	#5
DASHZNT Junior member Join Date: July 13, 2012 Posts: 179	Please tell me where you bought the uppers from... i would like to get started on my upper project and i gotta start somewhere and sometime!! DASHZNT

October 12, 2012, 06:56 PM	#6
djcantr Senior Member Join Date: January 28, 2012 Posts: 215	http://palmettostatearmory.com/index...-receiver.html

October 13, 2012, 03:59 PM	#7
greentick Senior Member Join Date: January 15, 2011 Location: Deep South Posts: 153	I also got a couple each of blemmed PSA uppers and lowers. No blem to be found...

October 14, 2012, 08:03 AM	#8
madcratebuilder Senior Member Join Date: November 2, 2007 Location: Northern Orygun Posts: 4,864	I don't agree with the "reciever is a receiver" statement. Lets set aside the forged vs billet and look at forged 7075 receiver sets. The most obvious differences are in the finish. Three types of finish used are: Hardcoat Anodize, or "Hard anodic coating" this is called "MIL-A-8625, Type III, Class 1 or Class 2" This anodic coating has a thickness 0.002” ± 0.0002, it has a dye added for the finish color. Sulfuric Anodize, this is "MIL-A-8625 Type II, Class 1 or Class 2". This is a Anodic film on aluminum, dye is used for color. Hardcoat Anodize w/Teflon this is "MIL-A-63576, Type I" Type II = Sulfuric Acid Anodize Type III = Sulfuric Acid Hardcoat Anodize Class 1 = Non-dyed Coatings Class 2 = Dyed Coatings (color to be specified) Everything today is Class 2, dye added. Type III well cost a bit more as well the Teflon additive. Manufacturers should list the type and class of finish. The added dye is the reason we see different finish colors. Now lets add lowers that can except ambi controls or 45* safety selectors. Compare mag well bevels. Even more difference with billet receiver sets. A "receiver is a receiver" is not always a receiver.