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Early Mk 14 Mod 0 replica project (also in progress)

1.8K views 11 replies 9 participants last post by  Tazman308  
#1 · (Edited)
Still need the SAGE crush washer, a couple of pins, parkerize a USGI NM op rod guide, and installation of the faux M14 selector lock, but this replica of an early Mk 14 Mod 0 is is getting closer. Receiver is a 2010 era 237k SAI M1A. I owe a HUGE thank you to Crazynoto for this project, as he had to do some milling on the medium weight Criterion barrel to allow it to fit this early SAGE chassis, and he also knurled the barrel and carefully installed the SAGE op rod guide block for me, etc.

First, here's two pics for inspiration. The 2004 era SAGE chassis on the earliest Mk 14 Mod Os had a full length 13" forend, and it was field tested in limited numbers in Afghanistan. Many of these early chassis were un-marked by SAGE on the right side, they were simply blank. These rifles also had standard length 22" barrels and not the shorter 18" barrels that are commonly seen on the production Mod 0s. They all used the unique NSG aluminum Badger Ordnance (and Crane specified) MK 14 Mod 0 rings with see-thru window that allowed the use of the rear sights - in case the scope became unserviceable.

The pictures I have seen of these early Mk 14 Mod 0 rifles all seem to be US Army troops, in particular Army Airborne Infantry soldiers, which is sort of interesting. I guess their command had asked for, or allowed, SOCOM/Crane to field-test these new SAGE M14 chassis many years ago...This is one of those early 1st generation, unmarked SAGE chassis in NSG (Navy SEAL gray) (Date is unknown):
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DoD picture file name refers to 2nd Battalion, 503d Airborne Infantry Regiment, in Afghanistan.
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Here’s pics of this project that started slowly back in 2020, but it's finally getting close to assembly.
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This style of marking is the so-called "dot matrix patient pending" chassis. Probably made circa November or Dec 2004, per Kevin (aka H20 Man) who has a lot of knowledge re the early SAGE stuff. It has the various 'lightening' holes that Crane requested for the Mk 14 program in Nov 2004, but it still has the long forend of the first generation chassis. Beginning in 2005 SAGE shortened the chassis by 1.75" and the 'dot matix' style font was replaced with deeper laser engraved lettering.
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Got lucky with an original Navy Mk 14 bolt via some trading of parts last year. I owe a big thank you to NukeWorker who sent me that little SAGE scope mount for the rear clip guide (to the right of the bolt). It's a small discontinued part, but its essential for an accurate Mk 14 Mod O replica.
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The one notable deviation on this replica MK 14 Mod 0 project is that instead of a standard profile USGI M14 barrel, I instead used a chrome-lined, medium weight Criterion barrel, 1/11 twist that was made for LRB Arms. However, it’s diameter required a relief notch milled on the left side to allow it to fit this early 6-hole top cover. The original SAGE chassis accommodated only standard USGI profile M14 barrels. (SAGE later started offering a 5-screw top cover that allowed the use of medium weight barrels, as seen on the M39 rifles).
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Chrome-lined chamber. Headspace was 1.631" w/ Mk 14 engraved bolt, so I was happy about that.
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Crazynoto’s handiwork regarding the required relief notch. In addition, he also knurled the area under the SAGE op rod guide. It's a press fit, but without a roll-pin, which should allow for a little bit of thermal expansion of the barrel, at least in theory.
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The interior shape of the six-screw top cover fits down into that relief notch, and thanks to this cut there is plenty of clearance so the barrel now fits, and can't rub against the chassis or top cover.
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Also seen are some original Mk 14 multi-tools. The SAGE vertical grip is a slightly older design, but unfortunately it's not the earliest design, as I have not seen one for sale.
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Quick history on the 1st versus 2nd generation SAGE chassis. The soldier feedback to Crane/SOCOM was that the chassis was a bit heavy and thus Crane had SAGE shorten the forend by 1.75" to lighten it slightly (by 4 ozs). Multiple "lightening" holes were also added to reduce weight. In early 2005 these changes were incorporated into the so-called "chop-mod" chassis that most Mk 14 Mod 0s utilized, along w/ the shortened 18" barrel and an SEI flash hider. However, I decided to built the earlier version with a 1st generation SAGE chassis, along with the standard length 22" barrel. The early aspects of this replica Mk 14 sort of fits my collection interests, and hopefully I can finish it in the weeks ahead.

Like my replica USMC M39 that is also in progress, this replica of an early Mk 14 Mod 0 project was difficult to piece together one part at a time, and thus it took a few years to get to this point. I’ll post some follow-up pictures once it’s completed.
 
#7 ·
Random Guy you must have allot of patients to gather the necessary parts to get to the finish line. Having Forum Members that would like you to get to the finished Rifle is awesome. I really like the choice of using the 22" barrel and building the first design. (y)
 
#8 · (Edited)
Having Forum Members that would like you to get to the finished Rifle is awesome.
I agree, Ted Brown reached out to me and offered his one spare SAGE crush washer, so I sent him a few dollars for that part, as it will allow me to put either this rifle or my M39 together. I owe him a public thanks, and some others too like NukeWorker, and especially Crazynoto who is an expert on these SAGE chassis and his machinest skills are very much appreciated..

Fwiw, here's a few more pics of the 1st generation, long-forend early Mk 14 Mod 0s in service.

This Army Airborne solider has likely removed the Leupold 4.5-14x scope from his unit's M107 Barnett 50BMG and installed it on this M14 (along with it's tallish rings). Note how the longer 13" forend goes all the way up to the back the gas cylinder. On the post "chop-mod" SAGE chassis you have a 1.75" gap between the rear of the gas cylinder and the chassis itself.

Caption: U.S. Army Sgt. Klye Edwards, from Reconnaissance Platoon, 2nd Battalion, 508th Parachute Infantry Regiment, looks through the scope of his rifle onto a mortar range near Ghazni, Afghanistan, on April 1, 2007.
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I think the first pic and the next two show just a generic black M16 sling, but I have a padded M60 sling as well, which was often used with the later Army EBR-RI rifles.
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Here's another early Mk 14 w/ long forend where the soldier put a red dot on it.
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Have not decided what sling I should use on my replica of an early Mk 14, but clearly it was operator preferences re the sling used.
 
#9 · (Edited)
I mocked up the rifle last night, but still waiting on the three mounting bolts for the SAGE op rod guide, and the castle nut set-screw to come in the mail - before I torque everything down. Also still need to install the faux M14 selector lock, but first wanted to test fit all the parts. For those curious, it weighs just over 15 lbs with its medium weight 22” barrel, bipod and vertical foregrip. I hope to finish it next month...and then do a range test before the winter weather arrives.
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Got lucky in that the greenish-gray patina of the Navy USGI bolt matches the color of the SAI receiver.
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Note how the 1st generation chassis w/ 13" long forend extends up to where the stock ferrule would normally sit, just behind the gas cylinder’s spindle valve.
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I might use the padded M60 military sling shown here, as some soldiers preferred that w/ these heavy rifles.
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Scope is a 2009 dated 3.5-10x40mm Leupold that reportedly came out of a govt auction, and I suspect it came off an issued Army EBR-RI M14. It has the distinct patina/surface wear on left side of the dial from being carried and rubbing up against tactical chest gear/maybe magazine pouches. I was saving this military take-off scope for an EBR-RI replica, but I decided to build this early Mk 14 Mod 0 instead, which also used this model of Leupold tactical scope.
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Here’s the weight with the medium profile match barrel, empty mag, Harris bipod, and vertical foregrip. Once I install the faux selector lock and add the padded M60 military sling, the weight will be around 15 lbs 8 or 9 ozs. Best shot from the bench or prone. I hope folks enjoyed the pictures of this odd-ball project.
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#12 ·
I had the opportunity to interact with a young man who served in 2008. I’m building a vault and he works for my supplier. I wanted to make sure that the racking system would hold m14s in a Sage Chassis with a Leupold scope. I asked him if he was familiar with the platform, not knowing his background. He shared his experience and we swapped pictures. With his permission I submit this photo from 2008.

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They were using rifles equipped with a MDT chassis. I may be lite on the details but I really enjoyed talking with him. Makes me almost happy to give a US company money to employ guys like him. Anyway, similar system that I thought might interest some.