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LL or DIAS compatible lowers? (Page 1 of 2)
Posted: 6/24/2008 6:42:06 PM EDT
[Last Edit: dfwgun][Edited]
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I am trying to compile a list of manufacturers/suppliers thats lowers are DIAS and LL compatable. These are typically refered to low shelf lowers. |
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Bushmaster and Spikes Tactical (ask for one with a low shelf) are what I use. I have a couple stripped lowers of each. I am planning on installing front pivot and rear takedown pins, mag release/bolt releases and pistol grip so all I have to do is "install DIAS and FCG". Is it legal to have a M16 selector in the receiver with NO FCG OR DIAS? |
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Essential Arms is high shelf. The old SGW Oly lowers are low shelf but are not machined fully limiting the sear width (~.41"). ZM lowers are also low shelf but the sear width is ~.43" As someone already said the Mega's are low shelf and have .5" for the sear. It would been nice to get the width information too and make a table when we have all the data. |
 Alexander Arms
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.. I'll let you know when they come in.
They are low shelf & will accept a RDIAS. |
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| From pure curiosity, will a Cav MKII accept a DIAS? |
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I spoke with the owner of Frankford Aresenal and he said his are like the Bushmaster and Mega as well.
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I have a BA steel RDIAS. It works great in my Mega lower in the 1700 serial number range. It drops right in without any timing issues and it works with 10 different upper I tried with it. I also have an older Mega in the 600 range and it has a high shelf. I also have a newer one in the MUR3000 range and the width is too narrow for my RDIAS. I was able to get it to work with a POF billet lower but I had to put a smaller radius in the rear part of the lower to get RDIAS to sit further back to make it work. My RDIAS was too fat to fit in a Bushmaster and Ameetec lower. I'm sure I could get it in but I wouldn't be able to get it out easily. |
The ones I saw were MGS2600's and MUR2800's if that helps |
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Anvil Arms Are as well. and John is an Industry Partner
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... To disarm the people is the best and most effective way to enslave them... George Mason. To preserve liberty, it is essential that the whole body of people always possess arms... Richard Henry Lee.
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+1 to sticky this.
BTW, Doublestar lowers have the low shelf: RDIAS and RLL ready. When my BM lower was getting tired. I built my RDIAS a new host using a Doublestar lower and the fit in the pocket was perfect so I went a bought a dozen at the first gunshow after that. I've got spare hosts for life, now. |
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I have taken all of the claimed known good low shelf receivers listed in this thread and compiled them alphabetically. Please copy and paste the list with your additions while keeping it alphabetized. Thank you.
Ameetec Arms Bushmaster CMMG Colt SP1 Colt Sporter II DoubleStar DPMS Essential Arms J-15 LWRC Mega Machine New MGIs Nodak-Spud Patriot Ordnance Factory Sendra Sharps Stripped Lower SI Defense Spikes-have to ask for it. Vulcan |
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Your list is inaccurate, because it does not distinguish low shelf (may fit a DIAS) from LL-compatible (has clearance for a link to move).
Some of those listed will fit a DIAS, but will not function with an LL without further machining. All Colts before the unmachined web sear block introduced in the early 2000s will work with either a DIAS or LL. If there is a pinned-in sear block, it must be removed first, of course. |
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Originally Posted By Circuits:
Your list is inaccurate, because it does not distinguish low shelf (may fit a DIAS) from LL-compatible (has clearance for a link to move). Some of those listed will fit a DIAS, but will not function with an LL without further machining. All Colts before the unmachined web sear block introduced in the early 2000s will work with either a DIAS or LL. If there is a pinned-in sear block, it must be removed first, of course. Well that is perfectly fine but if you could please sort them out by DIAS compatible verses LL compatible we would all be great-full. I just combed all of the claimed DIAS compatible lowers from the thread. The only ones that I can vouch for are early Bushmaster and SI Defense |
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Originally Posted By nfa86:
rra is no go without milling I have an essenial arms circa 1990 new vulcan and new dpms they all work with my link read m60 joes pagea bout where they cant hit and take a dremel to them. Someone like m60 joe can make virtually any lower work with a link/dias Post count: Low Wisdom: High I send every RDIAS/Lower combo to M60Joe and they get 'tuned' by the best guy in the business. Some seemed to fit but over time would get accelerated wear points so I now ship every 'new' one I acquire to M60 albeit I'm done with buying any more of them. At $18K+++ per unit, I'll spend 3K more and get a LNIB M16 |
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Originally Posted By ftldrben:
Originally Posted By nfa86:
rra is no go without milling I have an essenial arms circa 1990 new vulcan and new dpms they all work with my link read m60 joes pagea bout where they cant hit and take a dremel to them. Someone like m60 joe can make virtually any lower work with a link/dias Post count: Low Wisdom: High I send every RDIAS/Lower combo to M60Joe and they get 'tuned' by the best guy in the business. Some seemed to fit but over time would get accelerated wear points so I now ship every 'new' one I acquire to M60 albeit I'm done with buying any more of them. At $18K+++ per unit, I'll spend 3K more and get a LNIB M16 How many do you have? I feel so lame only having one 
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LL or DIAS compatible lowers? (Page 1 of 2)
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