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Modern M14 Mil-Spec Clone Build Spreadsheet

This is a discussion on Modern M14 Mil-Spec Clone Build Spreadsheet within the Modern M14 forums, part of the M14 M1A Forum category; Originally Posted by Different mrsaturn7085 is doing top notch work on this project. This will be a must have document for modern M14 fans. Thank ...


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Old November 26th, 2012, 10:06 AM   #16
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mrsaturn7085 is doing top notch work on this project. This will be a must have document for modern M14 fans.
Thank you for all the help you have provided on this project, Lee!

Big update coming within a day or two!

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Old November 26th, 2012, 12:03 PM   #17
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Updated - tons of new information!

Thanks from Different and mescalito
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Old November 27th, 2012, 10:18 PM   #18
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Updated Mod 2 section as well as a few other fields.

First time I noticed this but in all US Army photos with the EBR-RI, the bipod that is pictured is actually the 1A2-L model. The giveaway is the straight section of the spring on the side.

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Old December 2nd, 2012, 12:07 PM   #19
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Minor update - should have a few boxes on the Mod 0 (SEI) later this week!

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Old December 2nd, 2012, 11:34 PM   #20
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Right On Bradduhs!!

Great job guys. Two thumbs for mrsaturn7085 and Different.

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Old December 3rd, 2012, 04:00 AM   #21
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mrsaturn, please see your e-mail.

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Old December 3rd, 2012, 04:26 PM   #22
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Only four boxes left in the main (rifle component) section of the document that need confirmation:

Mk 14 Mod 0 - which Leupold 3.5-10X scope was used by USN and/or USAF in 2004-2005?
Mk 14 Mod 1 - stock rider height (0.50" or 0.75") - almost certainly the 0.75", but very difficult to tell via pictures
Mk 14 Mod 1 - height of rings used (0.885", 1.125" or other) - 0.885" will work, but Nightforce has informed me 1.125" was used on the Mod 1
M14 EBR-RI NM - did the SEI gas cylinder have M80HT treatment?

The remaining lower section (slings, cases, cleaning equipment, etc.) will be filled in as information shows up.

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Old December 3rd, 2012, 06:45 PM   #23
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Originally Posted by mrsaturn7085 View Post
Only four boxes left in the main (rifle component) section of the document that need confirmation:

M14 EBR-RI NM - did the SEI gas cylinder have M80HT treatment?
For the M14 EBR-RI NM, SEI supplied M80HT treated gas cylinder and gas cylinder plug and chromium plated gas piston.

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Old December 4th, 2012, 06:51 PM   #24
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First off thanks Mrsaturn and Different for all your work.

Next a question. Any ideas on the receivers used on all of these mods? All USGI? Did LRB or any other more modern receiver builders get involved in the mods, especially in the later rifles?

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Old December 4th, 2012, 08:08 PM   #25
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Next a question. Any ideas on the receivers used on all of these mods? All USGI? Did LRB or any other more modern receiver builders get involved in the mods, especially in the later rifles?
USGI can be confirmed, obviously. And I have read at least one or two reports of TACOM building on NM receivers (including the rear sight) during the EBR-RI builds; however, I haven't been able to confirm this in pictures.

Lastly, I think SEI is making receivers as well. I heard this from a pretty trusted source, but perhaps Lee could confirm/deny this?

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Old December 4th, 2012, 08:36 PM   #26
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USGI can be confirmed, obviously. And I have read at least one or two reports of TACOM building on NM receivers (including the rear sight) during the EBR-RI builds; however, I haven't been able to confirm this in pictures.

Lastly, I think SEI is making receivers as well. I heard this from a pretty trusted source, but perhaps Lee could confirm/deny this?
All of the modern models of M14 listed in mrsaturn's spreadsheet were built using USGI receivers. The M14 EBR-RI NM rifle that TACOM RIA built used a Winchester receiver. That rifle grouped 0.5 MOA at 100 meters with M118 LR ammunition in testing at Rock Island.

To be accurate, there were never any USGI M14 NM receivers. There were M14 NM rifles but the receivers were the same as rack grade M14 rifles with the exception of being marked differently on the heel. There is no "M14 NM receiver" drawing in the government technical data package. The selector lock on the M14 NM was welded to the receiver but that did not change the base receiver itself. There have been M14 EBR rifles converted from USGI M14 NM rifles in the U. S. Army.

What one may be thinking of is the one M21A5 clone that was supplied by Smith Enterprise, Inc. to Combat Developments Command at Fort Benning in 2008. The M21A5 is built with a USGI fiberglass M14 stock so it's not considered a "modern" M14 by conventional wisdom. From M14 Rifle History and Development Fifth Edition:

"On March 28, 2008, the M21A5/C-IED rifle was tested at Fort Benning, GA. The test rifle for the M21A5/C-IED rifle was built by Smith Enterprise, Inc. using a LRB Arms M14SA receiver. Otherwise, the test rifle was built to the same specifications as would have been done for a U. S. military owned model. The test M21A5/C-IED rifle printed a five shot 3/4 " group at 100 yards using M118LR ammunition. With the same lot of ammunition, the M21A5/C-IED test rifle grouped less than 10 " at 1000 yards."

Smith Enterprise, Inc. is making semi-automatic M14 receivers but they are NOT supplying the U. S. military with those receivers, civilian market sales only.

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Old December 5th, 2012, 09:07 AM   #27
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There have been M14 EBR rifles converted from USGI M14 NM rifles in the US Army.
This is what I was referring to - a few of the M14 EBR-RI rifles could have included the NM barrel, NM rear sight, welded selector, and heel stamping. Aside from the markings on the heel and welded selector, it is still the same as a normal USGI receiver.

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Smith Enterprise, Inc. is making semi-automatic M14 receivers but they are NOT supplying the U. S. military with those receivers, civilian market sales only.
This is good to know - I heard this from a friend that used to work in the Leupold Tactical department who knows Ron Smith. I'm guessing there was some confusion regarding the fact that Smith makes receivers and supplies certain parts (but not actual receivers) to the military.

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Old December 5th, 2012, 10:44 PM   #28
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Originally Posted by mrsaturn7085 View Post
Only four boxes left in the main (rifle component) section of the document that need confirmation:

Mk 14 Mod 0 - which Leupold 3.5-10X scope was used by USN and/or USAF in 2004-2005?
Mk 14 Mod 1 - stock rider height (0.50" or 0.75") - almost certainly the 0.75", but very difficult to tell via pictures
Mk 14 Mod 1 - height of rings used (0.885", 1.125" or other) - 0.885" will work, but Nightforce has informed me 1.125" was used on the Mod 1
M14 EBR-RI NM - did the SEI gas cylinder have M80HT treatment?

The remaining lower section (slings, cases, cleaning equipment, etc.) will be filled in as information shows up.
On the Mod 1, the original 500+ were NSG, not tan. Tan came later as a "special colour" offered by Clyde Armory. Also, it's not really an ALCS/CV chassis. The ALCS/CV, while similar, is different from the Mod 1. The Mod 1's few differences from the ALCS/CV include 6" side rails and a taller bottom rail to accommodate the M203 grenade launcher. The cheek risers were specially made 1.25" risers and are difficult to get now. The rings look to be the .885" height.

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Old December 5th, 2012, 11:15 PM   #29
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On the Mod 1, the original 500+ were NSG, not tan. Tan came later as a "special colour" offered by Clyde Armory. Also, it's not really an ALCS/CV chassis. The ALCS/CV, while similar, is different from the Mod 1. The Mod 1's few differences from the ALCS/CV include 6" side rails and a taller bottom rail to accommodate the M203 grenade launcher. The cheek risers were specially made 1.25" risers and are difficult to get now. The rings look to be the .885" height.
The document is intended to provide a guide to those looking to build the most accurate clones possible w/o having to source things like the extremely limited Mod 1 stocks that were available to civilians. Lee's book is a far better source for obtaining the historical details of each military build.

After taking another look at the riser, it clearly matches the Magpul PTS CTR 1.25" height riser. The front section is the easiest point to identify it - view from the side doesn't have the "step" leading up to the forward-most point like the .25/.50/.75" risers. These risers are still sold under the Magpul PTS Airsoft line and can still be obtained pretty easily via eBay.

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Old December 9th, 2012, 06:57 AM   #30
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For the M39 EMR, the front sight is USGI NM (part number 7791122) and the rear sight is the standard M14 aperture (part number 6008868) per the M39 EMR manual. Parts can be swapped out but the technical manual specifices a standard rear sight and a NM front sight. HTH

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