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80% Lowers Summary (Page 5 of 7)
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Originally Posted By PursuitSS:
THAT is a M-16 receiver, PERIOD! Originally Posted By PursuitSS:
Originally Posted By A_Friendly_Manatee: Much thanks to the OP for this thread. I've just started looking into 80% lowers, and this thread is a great resource.
I was browsing the manufacturers listed in the OP, and I noticed something unusual: http://moriartiarmaments.com/index.php?route=product/product&path=71_79&product_id=341 Not only does this 80%er have the trigger pocket milled out instead of the magwell, but it also seems to be milled out for machine gun parts (i.e. extended rear pocket, auto sear pin holes). What's up with that? THAT is a M-16 receiver, PERIOD! Looks more like a single-shot receiver to me.  (I'm not ordering one 'til NOLO wins, though.)
The older style 80% w/ a solid magwell sure would make things easier if one had an ARES belt fed upper or a .50" BMG upper. Tap the buffer tube boss and you're in business. |
Thanks to HammerHammer for the Team Membership.
Northern Conservative Baptist Great Lakes Region Council of 1912
Northern Conservative Baptist Great Lakes Region Council of 1912
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Originally Posted By backbencher:
You could order two of these, and have all the extra material you wanted... http://www.theflatspot.net/ar-15-receiver-flat.html Originally Posted By backbencher:
Originally Posted By jrtatonka: AFCarbon15 Have you had any luck finding that 80% lower I thought I found a few manufacturers but I cant't find them again? Quentin Devense has an Ambi, but the link to it no longer works.
Does anybody know of a forged lower with a flared magwell, and maybe a little extra material on the sides for customization? You could order two of these, and have all the extra material you wanted... http://www.theflatspot.net/ar-15-receiver-flat.html Mine was fun to build. A different kind of fabrication challenge...... 
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1st Cav Div, B 5/7
Vietnam/Cambodia
1970
Vietnam/Cambodia
1970
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Originally Posted By Russ4777:
Mine was fun to build. A different kind of fabrication challenge...... http://www.hunt101.com/data/500/IMG_7446.JPG Originally Posted By Russ4777:
Originally Posted By backbencher:
Originally Posted By jrtatonka: AFCarbon15 Have you had any luck finding that 80% lower I thought I found a few manufacturers but I cant't find them again? Quentin Devense has an Ambi, but the link to it no longer works.
Does anybody know of a forged lower with a flared magwell, and maybe a little extra material on the sides for customization? You could order two of these, and have all the extra material you wanted... http://www.theflatspot.net/ar-15-receiver-flat.html Mine was fun to build. A different kind of fabrication challenge...... http://www.hunt101.com/data/500/IMG_7446.JPG I have 3 of these "waiting" for me to get to them. |
A firearm is like a parachute, if you need one but don't have one, you'll probably never need one again.
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Originally Posted By AFCarbon15:
I have 3 of these "waiting" for me to get to them. Originally Posted By AFCarbon15:
Originally Posted By Russ4777:
Originally Posted By backbencher:
Originally Posted By jrtatonka: AFCarbon15 Have you had any luck finding that 80% lower I thought I found a few manufacturers but I cant't find them again? Quentin Devense has an Ambi, but the link to it no longer works.
Does anybody know of a forged lower with a flared magwell, and maybe a little extra material on the sides for customization? You could order two of these, and have all the extra material you wanted... http://www.theflatspot.net/ar-15-receiver-flat.html Mine was fun to build. A different kind of fabrication challenge...... http://www.hunt101.com/data/500/IMG_7446.JPG I have 3 of these "waiting" for me to get to them. Brazed mine together. No arc welding. Had to modify two of the plates slightly to make the mag catch work properly and to improve the magazine fit. No big deal though. 
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1st Cav Div, B 5/7
Vietnam/Cambodia
1970
Vietnam/Cambodia
1970
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Russ4777, do you or anyone else for that matter have the details on the parts needing modifications? I want to tig one, it should come out pretty clean, I'd like the milling to be clean too.
I've seen mention of it, but haven't seen the exact specs anywhere yet. This is as good of a place as any. TIA |
A firearm is like a parachute, if you need one but don't have one, you'll probably never need one again.
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Originally Posted By AFCarbon15: Russ4777, do you or anyone else for that matter have the details on the parts needing modifications? I want to tig one, it should come out pretty clean, I'd like the milling to be clean too.
I've seen mention of it, but haven't seen the exact specs anywhere yet. This is as good of a place as any. TIA As you can see, Russ milled the inside of the magwell for the magazine latch bump on the magazine. He also milled a bit out of the action sideplate so the magazine latch can sit deeper in the well. Give me a few, let me see if I can come up w/ the two threads from last year or so. http://www.ar15.com/forums/t_3_4/647105_Steel_AR_flats_from_the_Flat_Spot.html http://www.ar15.com/forums/t_3_4/648352_I_welded_together_a_steel_receiver_from_theflatspot_net__Update_6_11_Paint_Job_on_page_3.html IIRC, there also needs to be some extra material welded in for the safety detent hole, and some folks welded in some extra material in the back on either side of the upper's rear takedown lug. ETA: I've been meaning to ask you, Russ, did you have to use a spacer in the bottom of your buffer tube, since it doesn't screw into the receiver all the way? Nvm, it wasn't you. You used a proper tap. |
Thanks to HammerHammer for the Team Membership.
Northern Conservative Baptist Great Lakes Region Council of 1912
Northern Conservative Baptist Great Lakes Region Council of 1912
|
Originally Posted By backbencher:
As you can see, Russ milled the inside of the magwell for the magazine latch bump on the magazine. He also milled a bit out of the action sideplate so the magazine latch can sit deeper in the well. Give me a few, let me see if I can come up w/ the two threads from last year or so. http://www.ar15.com/forums/t_3_4/647105_Steel_AR_flats_from_the_Flat_Spot.html http://www.ar15.com/forums/t_3_4/648352_I_welded_together_a_steel_receiver_from_theflatspot_net__Update_6_11_Paint_Job_on_page_3.html IIRC, there also needs to be some extra material welded in for the safety detent hole, and some folks welded in some extra material in the back on either side of the upper's rear takedown lug. ETA: I've been meaning to ask you, Russ, did you have to use a spacer in the bottom of your buffer tube, since it doesn't screw into the receiver all the way? Nvm, it wasn't you. You used a proper tap. Originally Posted By backbencher:
Originally Posted By AFCarbon15: Russ4777, do you or anyone else for that matter have the details on the parts needing modifications? I want to tig one, it should come out pretty clean, I'd like the milling to be clean too.
I've seen mention of it, but haven't seen the exact specs anywhere yet. This is as good of a place as any. TIA As you can see, Russ milled the inside of the magwell for the magazine latch bump on the magazine. He also milled a bit out of the action sideplate so the magazine latch can sit deeper in the well. Give me a few, let me see if I can come up w/ the two threads from last year or so. http://www.ar15.com/forums/t_3_4/647105_Steel_AR_flats_from_the_Flat_Spot.html http://www.ar15.com/forums/t_3_4/648352_I_welded_together_a_steel_receiver_from_theflatspot_net__Update_6_11_Paint_Job_on_page_3.html IIRC, there also needs to be some extra material welded in for the safety detent hole, and some folks welded in some extra material in the back on either side of the upper's rear takedown lug. ETA: I've been meaning to ask you, Russ, did you have to use a spacer in the bottom of your buffer tube, since it doesn't screw into the receiver all the way? Nvm, it wasn't you. You used a proper tap. The mods I made to the side plates are clearly depicted in the photos above and described by BackBencher. I don't have the dimensions. They are self-evident as you tack weld the thing together and start trial fitting the lower parts. I did add some extra small plates where the rear takedown lug enters the lower. The opening was WAY too wide and yes I had to add some additional material to accommodate the safety detent hole. I tapped the receiver extension boss all the way through. A standard tube fits perfectly. This picture shows the interior mods/added pieces. 
I just noticed in this picture that I had to machine a small amount from the floor of the rear portion of the fire control pocket to give the trigger more reset travel. |
1st Cav Div, B 5/7
Vietnam/Cambodia
1970
Vietnam/Cambodia
1970
...believe in me, I'm with the High Command.
Joined:
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Posts:
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Originally Posted By shootertim:
Here's my 80% arms 7075 billet fde lower. For the only one I've ever done, it was easy as pie. ... Is that lower supposed to be a different color? Or is it just your camera's flash or something? The anodizing has an almost bronze color to it in those pictures. |
Man, it's my old Kodak. but the FDE of just about every part of the rifle is a different shade. I think the flash has screwed up the color. It's really hard to get an accurate picture with this camera, Here's what the whole rifle looks like. these pic are closer to representing the real color...but they are not perfect. As you can see the upper looks more copper or bronze then anything, the hand guard almost matches the furniture, the lower is a bit off, these pictures more represents the true color....All in all, I'm happy with it though.
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Yeah, it is the camera or flash. The right side and left side pictures the color looks completely different. One side looks bronze and very shiny like the previous pics, the other side you can tell it is green. Matching some of these colors can be very difficult as there is no universally accepted hard and fast standards as to what OD or FDE or any of those colors are. Different part makers produce different shades even when they use the same names and some things can vary from lot to lot or even part to part.
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Originally Posted By shootertim:
Here's my 80% arms 7075 billet fde lower. For the only one I've ever done, it was easy as pie. <a href="http://s1095.photobucket.com/user/camoman2/media/018_zpsktkiq2ui.jpg.html" target="_blank">http://i1095.photobucket.com/albums/i461/camoman2/018_zpsktkiq2ui.jpg</a> <a href="http://s1095.photobucket.com/user/camoman2/media/017_zpsiijvshpj.jpg.html" target="_blank">http://i1095.photobucket.com/albums/i461/camoman2/017_zpsiijvshpj.jpg</a> <a href="http://s1095.photobucket.com/user/camoman2/media/019_zpsq00qzyzu.jpg.html" target="_blank">http://i1095.photobucket.com/albums/i461/camoman2/019_zpsq00qzyzu.jpg</a> <a href="http://s1095.photobucket.com/user/camoman2/media/020_zpsmtf76b1h.jpg.html" target="_blank">http://i1095.photobucket.com/albums/i461/camoman2/020_zpsmtf76b1h.jpg</a> Looks really good. What method/jig did you use? |
What the constituents want doesn't matter anymore
Joined:
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Originally Posted By PursuitSS:
In machining out an "80% Lower" the rear lug is one of the more critical fitting dimensions. why risk it when you can buy one already cut. Originally Posted By PursuitSS:
Originally Posted By Deez54:
I tried doing a search on this but nothing came up. However, I might have done it wrong since I'm new here. Anyhow what is the difference between rear lug cut and not rear lug cut? I'm not new to AR's, but I am brand new to building my own from the ground up. In machining out an "80% Lower" the rear lug is one of the more critical fitting dimensions. why risk it when you can buy one already cut. I couldn't agree more. That is the one thing I look for when purchasing a lower. I messed up a couple of lowers from TR-Enabling when I first started the 80% game. I machined out the rear lug area too wide and any side to side movement locked up the BCG rearward travel. I ended up filling them back in with aluminum epoxy and re-machining them out. They look like shit but it fixed the side to side movement. I recently purchased an 80% lower from Fedarm and the rear lug area was out of spec and did not allow the upper to close on the lower at all. The area that would have been left between the trigger pocket and rear lug was hitting the rear lug of the upper. I had to disassemble the lower and machine out that area. Not a big deal but frustrating. Mora of the story, make sure the lower is in spec. |
I saw some girl texting and driving the other day and it really pissed me off, so I rolled down my window and threw my beer at her!
Adapt, improvise and overcome....or fucking die trying.
Adapt, improvise and overcome....or fucking die trying.
What the constituents want doesn't matter anymore
Joined:
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Originally Posted By AFCarbon15:
I have 3 of these "waiting" for me to get to them. Originally Posted By AFCarbon15:
Originally Posted By Russ4777:
Originally Posted By backbencher:
Originally Posted By jrtatonka: AFCarbon15 Have you had any luck finding that 80% lower I thought I found a few manufacturers but I cant't find them again? Quentin Devense has an Ambi, but the link to it no longer works.
Does anybody know of a forged lower with a flared magwell, and maybe a little extra material on the sides for customization? You could order two of these, and have all the extra material you wanted... http://www.theflatspot.net/ar-15-receiver-flat.html Mine was fun to build. A different kind of fabrication challenge...... http://www.hunt101.com/data/500/IMG_7446.JPG I have 3 of these "waiting" for me to get to them. I wonder if roughing up the metal slabs and assembling them with JB Weld would work? |
I saw some girl texting and driving the other day and it really pissed me off, so I rolled down my window and threw my beer at her!
Adapt, improvise and overcome....or fucking die trying.
Adapt, improvise and overcome....or fucking die trying.
What the constituents want doesn't matter anymore
Joined:
Nov 2011
Posts:
6560
EE: 100% (150)
TX, USA
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Originally Posted By backbencher:
I didn't try JB Weld. I can tell you cheap super glue does not work. Originally Posted By backbencher:
Originally Posted By wjoutlaw: I wonder if roughing up the metal slabs and assembling them with JB Weld would work? I didn't try JB Weld. I can tell you cheap super glue does not work. I saw that thread. That got me wondering about the JB Weld. I saw some promotional videos on it and they stated as long as the metal had a sufficient roughness it would flow into all the pores and scratches and create a permanent bond. |
I saw some girl texting and driving the other day and it really pissed me off, so I rolled down my window and threw my beer at her!
Adapt, improvise and overcome....or fucking die trying.
Adapt, improvise and overcome....or fucking die trying.
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Originally Posted By wjoutlaw: I saw that thread. That got me wondering about the JB Weld. I saw some promotional videos on it and they stated as long as the metal had a sufficient roughness it would flow into all the pores and scratches and create a permanent bond. It's $36 to find out. 
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Northern Conservative Baptist Great Lakes Region Council of 1912
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Originally Posted By JoshAston:
I could have told you that without spending the money to try it. Originally Posted By JoshAston:
Originally Posted By backbencher: I can tell you cheap super glue does not work. I could have told you that without spending the money to try it. Got close though. Down the road I'd like to braze an AR .308" one. I'd like to repeat Randall Rausch's experiment of putting an Armalite upper on a DPMS lower. |
Northern Conservative Baptist Great Lakes Region Council of 1912
...believe in me, I'm with the High Command.
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...believe in me, I'm with the High Command.
Joined:
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Posts:
9277
EE: 100% (35)
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Originally Posted By Stangfan94:
I have seen the iconic lowers and they are pretty awesome. Are there any other billet lowers like that? Flared magwell, a bit more character than a standard lower. You might check this out...LINK |
"When trading bullets it is better to give than to receive"
"People sleep peaceably in their beds at night only because rough men stand ready to do violence on their behalf." - George Orwell
"People sleep peaceably in their beds at night only because rough men stand ready to do violence on their behalf." - George Orwell
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Originally Posted By PursuitSS:
Originally Posted By Stangfan94:
I have seen the iconic lowers and they are pretty awesome. Are there any other billet lowers like that? Flared magwell, a bit more character than a standard lower. You might check this out...LINK I will keep an eye on that. 200 is a bit much for me right now. Iconic is having a 4th sale. $80 per lower. I'm gonna pick up one for sure. Thanks for pointing that out |
...believe in me, I'm with the High Command.
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Originally Posted By RCTreadaway:
Came across these and didn't see them listed in here. Might want to add them to your list? http://www.jlbillet.com/ar15-ambidextrous-80-lower/ https://www.arsenalordnance.com/arsenal-ultimate-ambi-lower-80-15 Good find, I've added them to the list. Thanks, PursuitSS |
"When trading bullets it is better to give than to receive"
"People sleep peaceably in their beds at night only because rough men stand ready to do violence on their behalf." - George Orwell
"People sleep peaceably in their beds at night only because rough men stand ready to do violence on their behalf." - George Orwell
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Found these a year ago or so. Bolt catch pin is a threaded hex head so no dealing with that damn catch pin or having to tape up the lower to install, takes two seconds with this lower. http://www.forgesurvivalsupply.com/store/p/496-Forge-Armoury-80-Lower-Receiver.aspx
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...believe in me, I'm with the High Command.
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Originally Posted By Yamadude:
Found these a year ago or so. Bolt catch pin is a threaded hex head so no dealing with that damn catch pin or having to tape up the lower to install, takes two seconds with this lower. http://www.forgesurvivalsupply.com/store/p/496-Forge-Armoury-80-Lower-Receiver.aspx Added to the list Thanks, PursuitSS |
"When trading bullets it is better to give than to receive"
"People sleep peaceably in their beds at night only because rough men stand ready to do violence on their behalf." - George Orwell
"People sleep peaceably in their beds at night only because rough men stand ready to do violence on their behalf." - George Orwell
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Originally Posted By eddienyr:
That's a nice rig you have thanks for sharing. I'm specifically looking for the colt version. I don't recall ever seeing Colt 9mm 80%'ers. |
A firearm is like a parachute, if you need one but don't have one, you'll probably never need one again.
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Tactical Kinetics
Material: 7075-T6 Construction: Forged Rear Lug Cut: Unknown Finish: Bare BATF Approval Letter Supplied: No Comments: |
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Originally Posted By K1rodeoboater:
BRS-47 <a href="http://s160.photobucket.com/user/Slightly_Stoopid_1/media/A362E2F1-3334-45CB-896A-D8FA77059D54_zpse73vus6f.jpg.html" target="_blank">http://i160.photobucket.com/albums/t184/Slightly_Stoopid_1/A362E2F1-3334-45CB-896A-D8FA77059D54_zpse73vus6f.jpg</a> They are delivering!!?!??!?!? |
A firearm is like a parachute, if you need one but don't have one, you'll probably never need one again.
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Originally Posted By AFCarbon15:
They are delivering!!?!??!?!? Originally Posted By AFCarbon15:
Originally Posted By K1rodeoboater:
BRS-47 <a href="http://s160.photobucket.com/user/Slightly_Stoopid_1/media/A362E2F1-3334-45CB-896A-D8FA77059D54_zpse73vus6f.jpg.html" target="_blank">http://i160.photobucket.com/albums/t184/Slightly_Stoopid_1/A362E2F1-3334-45CB-896A-D8FA77059D54_zpse73vus6f.jpg</a> They are delivering!!?!??!?!? Evidently. Mine arrived yesterday |
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Originally Posted By K1rodeoboater:
Evidently. Mine arrived yesterday Originally Posted By K1rodeoboater:
Originally Posted By AFCarbon15:
Originally Posted By K1rodeoboater:
BRS-47 <a href="http://s160.photobucket.com/user/Slightly_Stoopid_1/media/A362E2F1-3334-45CB-896A-D8FA77059D54_zpse73vus6f.jpg.html" target="_blank">http://i160.photobucket.com/albums/t184/Slightly_Stoopid_1/A362E2F1-3334-45CB-896A-D8FA77059D54_zpse73vus6f.jpg</a> They are delivering!!?!??!?!? Evidently. Mine arrived yesterday Damn it.... I JUST sold my modulus jig. This is the first I've heard of this product 
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Originally Posted By RCTreadaway:
Damn it.... I JUST sold my modulus jig. This is the first I've heard of this product
Talk about bad timing  . Yeah they are a small company and really haven't advertised it. I pre-ordered months ago and they are about 2mo past the originally given release date. I've always wanted an AK mag pattern AR. I was ex Utes for the CMMG mutant till I found out it was an intermediate between AR-15 and AR-10. Then I was excited about the PSA KS-47, however I refuse to be an early adopter of anything they make after seeing how the PA-10 and PSA AK-47 release went.
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Originally Posted By Blindeye:
I milled my BRS-47 receiver with the regular Modulus jig. No issues. I got mine almost 3 weeks ago. G. Have you shot your build yet? The Palmetto KS-47 is having cycling issues with any pressure on the magazine (but seems to cycle fine with no pressure on the mag). I'm curious if the BRS-47 has this issue sorted, or if it may have similar issues. |
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80% Lowers Summary (Page 5 of 7)
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