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Socom16 Experiences: A Reference Thread

This is a discussion on Socom16 Experiences: A Reference Thread within the Modern M14 forums, part of the M14 M1A Forum category; I always kind of considered the SEI gas lock as not an option. I like the standard Socom's muzzle brake. I thought I wouldn't me ...


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Old January 27th, 2017, 07:41 PM   #16
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I always kind of considered the SEI gas lock as not an option. I like the standard Socom's muzzle brake. I thought I wouldn't me able to use the SA muzzle brake on the SEI gas lock. Is that an option? Can I use the SEI gas lock with the Socom muzzle brake. If SEI offered the gas lock with an Incorporated SA Socom muzzle brake that would be nice. Otherwise I'll just get the SA .062 Socom front sight and get a standard or NM rear sight.


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Old January 29th, 2017, 06:10 AM   #17
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The SEI gas lock exposes 5/8x24 threads and raises the front sight deck to standard height. The Great Lakes Tactical does the same but keeps the SOCOM sight deck. The Delta-P design does the same as GLT.

I can say that the SEI system works and is concentric; I have no experience with the other two. One thing of note is that the SEI system does not extend the shoulder past the gas plug, even their "shorter" SOCOM plug. It's a giant pain in the ass, and required machining a 0.140" spacer true to extend it forward. Really a gross oversight on their side. The other two options do, but maintain the lower SOCOM deck and don't allow standard sights. You're kinda damned if you do, damned if you don't. Be especially careful with tolerance stacking if you're going to suppress, and test for concentricity with a gauge or muzzle rod.

The SA muzzle device on the SOCOM is integral to the gas block and cannot be removed. If you wanted something similar in .30 5.8x24, maybe the BABC from Battlecomp? I've been happy with mine on my AR-15. Another options for the look is the Effin-A.

edit: pic of the BABC. Not mine. Although once you go brake, you won't go back. :)



Last edited by DkHelmet; January 29th, 2017 at 06:46 AM. Reason: Added notes on shoulders
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Old January 29th, 2017, 10:50 AM   #18
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Great info Dk. And I know it's not yours but that Battlecomp 1.5 looks pretty mean on a Socom gas block!

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Old January 29th, 2017, 02:57 PM   #19
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Agreed. They got some pushback for being less than stellar in performance compared to dedicated two and three chamber brakes, but I really liked mine. It certainly looks mean enough, and having shot it at night it does a good job of dispersing flash.

I seriously doubt there was much R&D gone into the SOCOM FH aside from "drill lots of holes". You'd probably get more bang for your buck with a proper brake or comp.

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Old January 29th, 2017, 07:44 PM   #20
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My Socom 16 was manufactured in 2006.
Was a local police officers unofficial "trunk gun", and was barely shot. Picked it up "used" in "09".



Before I shot it I did some mods. Which is not the best thing to do.
I changed out the factory handguard/scout mount with the Ultimak M8 rail.
Replaced the factory spring guide with the Sadlak N.M. spring guide.
Added a Buffer Technologies M1A recoil buffer.
Replaced factory gas plug with a S.E. Socom gas plug.


Shot about 3-4" at 100 yds. with surplus ammo and that brick Springfield Arms calls a front sight.
Put a red dot on the rifle and that got me 2-3" at 100 yards with surplus ammo.

Next Mod was the front sight. Filed it down to a trapezoid. Top width being .072"


Also started to reload for the rifle.
Between the reloads and the front sight mod. Average groups went to 1.5-2" at 100 yds. Best group, 5 shot, has been 1.25" at 100 yds.

Now I do like the factory brake on my Socom 16. So no changing out the gas lock/brake for me. I did a thread for sight options with the original gas lock/brake. Here's the link;

www.m14forum.com/modern-m14/102642-socom-front-sight-options-factory-gas-lock-muzzle-brake-pic-heavy.html

After about 2000 rounds my accuracy started going south. Checked the rifle and found the gas cylinder/front band had loosened up.
Needed to shim the gas cylinder. Since I was taking the gas cylinder off. I took the opportunity to change out the factory gas cylinder to a Springfield Armory N.M. unitized gas cylinder.
With the new gas cylinder I installed a new Sadlak Titanium Nitride gas piston.
No improvement on accuracy, but no loss either.

As the O.P. related in his first post about bullet weight. My Socom prefers projectile weights between 123-155 grains. The 155 grain bullets being the top dog.

Now I have both wood stocks and a couple of the Springfield retreaded USGI synthetic stocks.
My Socom 16 does shoot more consistently in a wood stock. But for hunting I prefer using the synthetic stock.

Couple of pictures to leave you with.

Sunday best;



Work clothes;



Hope this helps.
Thanks,
Glenn

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Old January 29th, 2017, 08:10 PM   #21
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Glenn you were always an encouragement to me along the way of my Socom modifications. Thanks.

This rifle is is shot A LOT! A new barrel mid-December and I've more'n 500 rounds down the pipe since.

Tightest group was sub-moa (5 shots), but 1.25" is regularly achievable if I do my part!

Yesterday my first three shots of five at 200 yards were holding 1.25 moa then four and five were off paper, dang it. (wind was starting to gust up)

Today I rang the gong at 250 yards each shot tried (four).

One thing I like about this shorty; I climb down and back up or up and back down to get to two of my shooting areas, these are out the road and rarely are there people there. I always sling my rifle along with my pack and the 16" barrel stays clear of the rocks and snow or mud.




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Old January 29th, 2017, 08:27 PM   #22
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Quote:
Originally Posted by gettinolder View Post

Thank You Sir!

I'm really like that set up.
Which barrel did you get when you replaced yours?
And is that a McMillan MFS-14 stock?

Glenn

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Old January 29th, 2017, 08:28 PM   #23
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Today; first picture, gong is between trees at treeline if you zoom in. (UN helmet blue)

Second picture; I always climb up and spray fresh paint on gong so I can see new POI's

Third picture; although I was on the lee side of the mountain, powerful gusts out of the NW were "willowawing" down and through the area.

Fourth picture; at the end of shooting session I hike up and see where hits were scored and repaint.









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Old January 29th, 2017, 08:29 PM   #24
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Quote:
Originally Posted by geepee3 View Post
Thank You Sir!

I'm really like that set up.
Which barrel did you get when you replaced yours?
And is that a McMillan MFS-14 stock?

Glenn
Barrel Criterion from FA, 1/10" NM

Yes on stock.

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Old February 2nd, 2017, 07:32 PM   #25
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Hi all - this is the perfect thread for me. I recently bought a 2005 (I believe based on serial#) SA socom 16. It looks like it was not shot much. I am learning a ton about the modern m1a and its variations here and this is my new favorite. I am sure I'll need to have one in each barrel length! Mine appears to be usgi fiberglass stock and trigger group. I need to research the rest of the components as well. It appears to be bone stock and I am not sure I want to do any mods to it- I think it might be cool to keep it original (and it shoots very well already). I am getting tight groups with my 40 grain hand loads of 3031 and nosler 155's. I am only able to shoot indoors this winter- we'll see how I feel at 100 yards +. Just out of curiosity- can anyone comment on the changes between the early models vs. recent versions? Thanks!
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Thanks from gunsbeerbacon

Last edited by tempotantrum; February 2nd, 2017 at 07:41 PM. Reason: dumb typos
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Old February 3rd, 2017, 09:47 AM   #26
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Sweet find, Tempo! As far as I know, the only thing thats changed since the 2004/05 intro of the Socom 16 was the 2011 changeover from refurbed USGI fiberglass to SAI synthetics, which may have improved somewhat from what I gather from others feedback compared with my own synthetic (2016 purchase). The factory rail is a carryover from the Scout Squad, and the Socom II is mechanically identical except for the Vltor cluster rail. The 16.25 inch barrel, proprietary gas block and iron sights are really all that set the Socom apart from other M1As to my knowledge and those havent been altered. Someone more knowledgeable may be able to correct me if Im wrong.


PS if any of you guys have been thinking about picking up an extended bolt-release, the one I just installed has been performing flawlessly. I got it from Brownells for just under $60. Shoot me a message if you have trouble installing, the rollpin is pretty tight, you need a 1/16th and 3/32nd punch. This eliminates the reach-around manipulation of the OpRod, instead you just slap the receiver like an AR. i believe its been mil-spec on all M14 variants currently in service.
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Thanks from geepee3 and gettinolder

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Old February 7th, 2017, 03:14 PM   #27
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"Today; first picture, gong is between trees at treeline if you zoom in. (UN helmet blue)"

always an excellent choice.


With my 16, I put on the SEI gas lock with dovetail and a vortex flash hider, skinnier front post and standard aperture, shimmed, moved to a GI op rod, solid spring guide and GI birch skim bedded. I did all this before the SEI folks got out of hand or I would have found another solution. Fact is though that it works.

with sandbag rest, I'm keeping it to 1.5-1.75" with surplus and shaved it to just over an inch with good 155 gr. if I remember what I was taught. I can hit 18x24 steel plates 90% of the time at 200m standing, hasty sling, and out to 400, from sandbag, consistently with surplus.

eta: I also ditched the forward scope mount.

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Old February 7th, 2017, 07:13 PM   #28
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Quote:
Originally Posted by conditionone View Post
"Today; first picture, gong is between trees at treeline if you zoom in. (UN helmet blue)"

always an excellent choice.


With my 16, I put on the SEI gas lock with dovetail and a vortex flash hider, skinnier front post and standard aperture, shimmed, moved to a GI op rod, solid spring guide and GI birch skim bedded. I did all this before the SEI folks got out of hand or I would have found another solution. Fact is though that it works.

with sandbag rest, I'm keeping it to 1.5-1.75" with surplus and shaved it to just over an inch with good 155 gr. if I remember what I was taught. I can hit 18x24 steel plates 90% of the time at 200m standing, hasty sling, and out to 400, from sandbag, consistently with surplus.

eta: I also ditched the forward scope mount.
That is great shooting!

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Old February 7th, 2017, 07:46 PM   #29
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Thank you. I wasn't sold til I made all the changes but I just love my 16.

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Old February 7th, 2017, 08:26 PM   #30
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I imagine the EoTech will do fine. I had known a guy put one on some of his AK rifles including one in 308. His did pretty good holding up.
The old ranch owner who bought my brother his rifle I have inherited soon after bought him a Socom 16 and I advised putting an EoTech on it before all their issues... That was one fun sweet rifle to shoot!

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