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  #1  
Old May 14th, 2011, 09:44 PM
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Lasergunner Lasergunner is offline
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Default AR Lower made from Bolt-together-flats

This comes from over at Weaponeer.net




http://www.weaponeer.net/forum/uploa...t_Receiver.pdf


It sure would be nice if we had specs/machinist drawings on the Fire Control Group.
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  #2  
Old February 6th, 2013, 08:47 PM
Archangel2003
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Default Re: AR Lower made from Bolt-together-flats

So, only one post?

Every one just downloaded the drawings and were so focused on building it they neglected to come back and say "THANK YOU"?

THANK YOU!

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  #3  
Old February 7th, 2013, 12:19 AM
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Iowegan Iowegan is offline
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Default Re: AR Lower made from Bolt-together-flats

Interesting build.
Thanks!

I think these would be very doable, even in a SHTF scenario.
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Old February 7th, 2013, 01:55 AM
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Default Re: AR Lower made from Bolt-together-flats

lasergunner,

I ran across some drawings for the FCG for an AR15 awhile back.
I'll see if I can find them, and post.
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  #5  
Old February 7th, 2013, 09:45 AM
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Default Re: AR Lower made from Bolt-together-flats

How long before ATF bans these? It would seem that if you can build a AR lower it would not take much more to make a M16 lower.
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  #6  
Old February 7th, 2013, 02:07 PM
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Default Re: AR Lower made from Bolt-together-flats

Quote:
Originally Posted by ah1g View Post
How long before ATF bans these? It would seem that if you can build a AR lower it would not take much more to make a M16 lower.
IIRC, it takes a slew of operating parts in the FCG, none of which can be used from the "semi" family of parts, to make that happen. Deliberate design at work.
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  #7  
Old February 11th, 2013, 12:59 PM
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Default Re: AR Lower made from Bolt-together-flats

I wonder, what, exactly, on this build, would be considered the "serialized" part?
You know, like an AR build, and leaving the FCG pocket alone, would not constitute it being a "receiver".

It's ugly as sin, but funtionality wouldn't have to be purdy, would it?

I could think of a few applications of something like this, right off the top of my chrome dome.
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  #8  
Old February 23rd, 2013, 01:01 AM
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Default Re: AR Lower made from Bolt-together-flats

KT Ordnance perfected that a few years ago and made an 80% kit out of it. I don't think they sell the separate parts though, you have to buy the entire thing around $250-$300
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  #9  
Old February 23rd, 2013, 12:24 PM
Archangel2003
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Default Re: AR Lower made from Bolt-together-flats

This one seems much nicer.

It's only three pieces.

I don't know how to post pictures, but it's assembled and with an upper on the bottom of this page.

http://www.ktordnance.com/kto/showcase.php

Here is one in that style the parts torn down.

http://www.pagunblog.com/2011/12/23/...slight-detour/

I can't seem to find the CADD drawings of and of the 3 piece unit though, just the 15 piece one that is ugly as sin.

Even the 3 piece could even be better looking if they took the time to give it a more conventional look on the outer sides.

I'm going to take a standard AR 15 Lower CADD drawing and see if I can slice it up into 3 pieces something like that just to see if I can do it.

I'm thinking 3 versions.
1: Screw together.
2: Pin together like the upper pins to the lower but pinning down and having the upper lock it all together.
3: A seam to TIG weld.
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  #10  
Old February 24th, 2013, 05:21 PM
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Lasergunner Lasergunner is offline
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Default Re: AR Lower made from Bolt-together-flats

Here are blueprints for the 30 round AR15/M16 Magazine. This is from Firearms Files. http://firearmfiles.com/files/AR15/1...-Blueprint.pdf

http://firearmfiles.com/andromeda.php?q=f&f=%2Ffiles



I have seen a lot of good drawings and even some animations of the FCG but nowhere have I seen these components dimensioned.
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  #11  
Old February 24th, 2013, 11:25 PM
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Default Re: AR Lower made from Bolt-together-flats

So, anyone have one of those 3 or 4 piece lowers from KT?

I have seen one where the front is a separate piece (4 Pieces) and one where the front piece was split in half and each side was a part of the side plates (3 Pieces).
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  #12  
Old February 26th, 2013, 12:53 PM
thirty-thirty thirty-thirty is offline
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Default Re: AR Lower made from Bolt-together-flats

Disassembled pic of KT:
http://www.ktordnance.com/kto/detail/kt15bx.html



<-- Right Side Disassembled Left Side -->
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  #13  
Old March 4th, 2013, 09:29 AM
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Default Re: AR Lower made from Bolt-together-flats


http://www.thefirearmsforum.com/showthread.php?t=109892
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  #14  
Old March 26th, 2013, 12:30 PM
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Sturmgewehr44 Sturmgewehr44 is offline
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Default Re: AR Lower made from Bolt-together-flats

There's some great stuff on Weapons Guild too but you have to be a member to see it. Guys have made bolt together and weld together lowers there, and at least one recent thread shows a very nice looking bolt together unit.

I can cast rear sections to help create easy buffer towers instead of whittling down a big piece of stock. Working on perfecting that now. (Started trying to cast complete lowers but plenty of guys are doing that and since it takes a long time to machine a 0% lower, I figured I'd be much farther ahead to cast receivers like the KT Ordnance ones). No, casting isn't as strong as forging but neither is billet - nobody mentions that. They make lowers from polymer now and cast is also plenty strong for what we want.
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Last edited by Sturmgewehr44; March 26th, 2013 at 12:33 PM.
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