Steve Johnson

Founder and Dictator-In-Chief of TFB. A passionate gun owner, a shooting enthusiast and totally tacti-uncool. Favorite first date location: any gun range. Steve can be contacted here.


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  • http://www.WeaponsCache.com Matt

    WHERE can you buy that magpul lower? I wanted to put together a new AR but now I’d rather buy that lower. Someone, PLEASE tell me! :)

    • http://www.thefirearmblog.com Steve

      Matt, special edition. They make a handful every so often.

  • Aurelien

    The Magpul (MPLA-C) has been around for a year now, but only sold on some 50 Noveske complete rifles, never lower-only.
    Seems their insurance company stopped bothering them.

  • SpudGun

    At first I wasn’t interested, but then someone put the word MAGPUL on it and now I have to buy it!

    If only Magpul made cars and houses and clothes, then my life would be complete.

    I’m being sarcastic by the way.

  • B Woodman

    Who’s the anime cutie on the MAGPUL lower?

  • Todd

    Is is just me or does that ARFCOM lower look a little on the poorly finished side?

  • Isaac

    The C series were basically only given out to employees or folks who’d made a notable contribution to the growth and development of Magpul.

    You almost certainly will not find the C series sold openly. The A and B series have been sold on limited run Noveske guns.

    • http://www.thefirearmblog.com Steve

      Isaac, ah, thanks for the info.

  • Bandito762

    So, does the magpul lower have ambi magazine release? How does it work?

  • Lance

    Cool love the Grey color. Do they make a A1 style lower.

  • Destroyer

    those are gnarly (in a good way) lowers. Reminds me of those from tactical innovations…big, meaty, and rugged.

  • Jim

    Why does the top picture look like mickey mouse’s head with a surgical mask on and a thought bubble coming out?

  • jdun1911

    From what Jeep297 posted on the thread:

    “Not only is it real but It’s the rarest of all of magpul lowers. The china doll series lowers are supposed to only be for special magpul employees or people who have done a lot for their company.”

    The magpul lower is really nice. It is made out billet, not as strong as forge but it allows them to shape the lower as they wanted it.

    I like the Arfcom lower roll mark. From what I understand it will be available in the near future. If the price is right I might pick at least one.

    The only place I know that make customize roll marks and serial numbers is Fidelis Arms. If there are any other companies that is out there that make customize roll marks and serial numbers out of blank receiver for the general public post it up.

    http://www.fidelisarms.com

    • http://www.thefirearmblog.com Steve

      jdun1911, thanks for the info.

  • http://www.WeaponsCache.com Matt

    When they produce a batch, are they normally distributed through Noveske?

  • http://suburbansdomain.blogspot.com/ Suburban

    The anime girl kind of screams “AIRSOFT!” Figuratively speaking, of course. Seems like an odd choice of things to put on an AR lower.

  • Dr. Feelgood

    jdun1911, I’m planning my first AR build and I’m interested in your statement that forged lowers are stronger than billet. I’ve always heard the opposite. Can you clarify that, please?

  • jdun1911

    Billet are made out of 6061 aluminum. Billet AR15 receiver are made out of 6061-T6 aluminum. The T6 means it is heat treated to give it extra strength. Forge AR15 receiver are made out of 7075-T6 aluminum. The 7056 aluminum have far more tensile strength then 6061. The forging process make it even stronger. 7075 aluminum have greater resistant to corrosion then 6061.

    The original M16A1 receivers were made out of 6061 (IIRC) aluminum but was later switch to 7075 for corrosion resistances.

    You can tell between forge and billet receiver just by the looks. The Arfcom receive is forge. The magpul receiver is billet. Billet receiver are easier to mill then forge. Billet receiver are made out of a block of billet aluminum. Forge receiver already has it shape so less milling are required.

    This is a forge AR15 7075-T6 aluminum blank. You can buy it without a FFL. Notice it has already been shaped by the forging process. However you have to mill it to make it a functional receiver and that takes time. I recommend to anyone to buy one for learning experience. At the very least it is a good paper weight. I have bought many products from DSARMS, so no fear.

    http://www.dsarms.com/AR15-Lower-Receiver-7075-T6-Alloy-Forging-Military-Spec—1001/productinfo/1001/

    This is a video of how billet receiver are made. It started as a block of 6061-T6 aluminum and hence can be shape whatever the designer like.

    http://www.thefirearmblog.com/blog/2009/02/25/how-billet-ar-15-receivers-are-made/

    With that said, you should not worry about lower receiver strength. AR15 receiver upper and lower are almost stress free. In other words they will last long then you, your kids and their grand kids, theoretically of course.

    • http://www.thefirearmblog.com Steve

      jdun1911, thanks for the info .

    • Brian

      You’re an idiot and don’t know half of what you are talking about. Not all forgings are 7075 TKS Engineering for instance uses 6061 forgings and some manufacturers offer forgings in both alloys, the 6061 obviously being cheaper for instance Double Diamond. And I haven’t seen a billet receiver yet that was machined out of 6061. Tactical Inc, Mega Machine,Seekins, POF, SunDevil…all machined out of 7075 billet. If you know of a 6061 billet receiver post the link, I don’t believe there is one out there unless maybe there are some made in china cheapy charlies out there. The only parts of your post that were correct were in reference to the actual properties of the two metals and that you just copied from the links that you posted. Even parts of that were filled with misguided and missing information.
      The forged receivers are forged castings the part is cast and then forged and finally machined. the casting process inherently leaves much room for flaws so even though they are forged there is still a strong likelyhood that there are weak areas in the casting.
      Billets are made from extrusions where the extrusion process is much the same as forging. billets are much more pure than castings and are in fact stronger than forged castings. maybe not on the surface because in a billet the forged surface from the extrusion process is machined away. but the sectional density of the metal is far superior to a forged casting.
      I’m not trying to be an a hole, but if you are going to post information post correct information so that the guys on here that don’t know aren’t filled with false facts.

  • jdun1911

    When I said stress I mean impact stress. You do not want the upper receiver to be made out of plastic because of heat stress. It will you know melt the plastic and barrel threads off which is bad.

    Here is the the tensile strength properties for aluminum. The 7075-t6 unforged (83.0) has almost twice the tensile strength then 6160-t6 (45.0)

    http://www.americanmachinetools.com/tensile_strength.htm

    I believe Anchor Harvey is one of a handful of companies that does AR15 forging. DSArms get their lower forge blanks from them as well as many AR15 manufactures. You might want to check out their website if you’re interested in how they do forging.

    http://www.anchorharvey.com/the_process.html

  • Dr. Feelgood

    Okay, thanks. I’m well acquainted with the different manufacturing processes and alloy ratings. I thought you were talking about forged vs. billet of the same alloy. All other things being equal, the main advantage of a forging over a milled billet is the dense graining of material in the molecular “shell” which provides a harder wear surface and better corrosion resistance. Otherwise the different manufacturing processes should yield final receivers of roughly equivalent strength. There are many AR makers who machine their lowers from 7075-T6 billets.

    I agree that AR lowers are under very little stress (unless abused) and the substantial strength difference between 6061 and 7075 is practically negligible in this application. The AR-180B has a polymer lower, and the only material failure I’ve ever seen discussed is elongation of the forward pin holes resulting from repeated takedowns.

    So where can I get an AR lower milled from 416 Stainless Steel?

  • jdun1911

    As far as I know POF is the only one that make 7075-T6 billet receivers. There might be others that I’m not aware off tho or companies that have to 7075-T6 billet receivers.

  • http://www.magpul.com Richard Fitzpatrick

    All Magpul Lowers are 7075-T6 with the exception of the first 3 which were used to test the CNC program

  • Nunya

    limited edition is not worth $600+, rollmarks are not worth $600