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xtremesports1975
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Posted: 11/20/2013 3:31:29 AM EST
Anyone have the UCIW Ultra Compact Stock on their SBR? I am trying to decide if it's worth the $130 to get a inch shorter.

My SBR is already down to 25" collapsed and I'm trying to trim it down as much as I can.
kmanoni
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Posted: 11/20/2013 11:17:05 AM EST
i think they mean the "ultra compact stock" is an inch shorter than the "compact stock".
and i think you are also a little more than inch shorter if you use the shorter buffer tube that comes with the UCIW stock.


just guessing ... but probly 3+" shorter than a SOPMOD stock with carbine buffer tube.
tahenley
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Posted: 11/20/2013 11:34:47 AM EST
[Last Edit: 11/20/2013 11:39:23 AM EST by tahenley]
It is about 2" shorter than a magpul str or moe. Has a short tube and shorty buffer. The spring is flat coil. It is tiny but I like it.
Full rifle pic in sbr pc thread page 86

xtremesports1975
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Posted: 11/20/2013 3:14:12 PM EST
Exactly what I was hoping to hear and picture is great. Thanks guys! Looks like I'll be getting one.
JimmyT
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Posted: 11/20/2013 4:12:01 PM EST
[Last Edit: 11/20/2013 4:12:24 PM EST by JimmyT]
Here's my 9mm SBR.

krichbaum
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Posted: 11/22/2013 1:01:06 PM EST
That ^^^^ is badass. I'm gonna have to get one of those stock setups.
smicha6551
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Posted: 11/25/2013 5:10:02 AM EST
For anyone that's considering one of these stocks, two things. One, they do feel solid, and two, LWRC is running a 20% off Black Friday sale - so it's only $104.
jake-cutter
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Posted: 11/25/2013 6:01:36 AM EST
[Jump To Reply]Originally Posted By smicha6551:
For anyone that's considering one of these stocks, two things. One, they do feel solid, and two, LWRC is running a 20% off Black Friday sale - so it's only $104.


With the sale going on I ordered one for a 7" build I have.
krichbaum
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Posted: 11/25/2013 9:47:38 AM EST
[Jump To Reply]Originally Posted By smicha6551:
For anyone that's considering one of these stocks, two things. One, they do feel solid, and two, LWRC is running a 20% off Black Friday sale - so it's only $104.


Dammit, I ordered Friday. I called them up and I asked if I could add another couple stocks to the order and get the discount and they said no way. Oh well...I figured they might want to sell a couple more.
playinARound
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Posted: 11/25/2013 10:22:42 AM EST
Do they have proprietary buffers for this size stock? If so, do they have different weight buffers to run with a suppressor? I have a 10.5" SBR, but want to run with a suppressor.
shadowcop
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Posted: 11/25/2013 4:06:05 PM EST
Thanks! Just ordered one

Dave N
"Better to die for something than live for nothing"

xtremesports1975
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Posted: 11/25/2013 5:19:24 PM EST
I saw the 20% today so I ordered.

I can't wait!
krichbaum
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Posted: 11/27/2013 10:20:24 AM EST
[Last Edit: 11/27/2013 10:27:22 AM EST by krichbaum]
Got mine, installed on my 9mm SBR. I'm not sure yet what I'll end up with for a buffer. Some quick length measurements:

LWRC Ultra Compact buffer - 2.157"
H2 buffer - 3.245"
Spikes 9mm buffer - 4.113"

The H2 buffer (or any 'standard' buffer) still allows enough travel that it should cycle fine with 9mm. The extended 9mm buffer is definitely too long. I need to get another tungsten weight to add to my H2 and try it out. It looks like it will be tough to get 'heavy' 9mm buffer weights in this short of a package. Of course, I have no idea what the rate is of the flatwire spring that LWRC includes, which will be a factor as well.

ETA: I just realized that heavybuffers makes a carbine buffer that weighs 8.5 oz. That might be the ticket for this stock on a 9mm gun.

Imdelaw
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Posted: 11/27/2013 6:14:23 PM EST
Why not use a standard (non X) 9mm buffer?
krichbaum
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Posted: 11/28/2013 3:43:23 AM EST
[Jump To Reply]Originally Posted By Imdelaw:
Why not use a standard (non X) 9mm buffer?


IIRC a standard 9mm buffer is just a little heavier than an H3. It will likely work, but these things tend to work better with an even heavier buffer. There is an 8.5 oz standard length buffer available that should work well.
shadowcop
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Posted: 11/30/2013 2:47:02 PM EST
Got mine yesterday!
Mounted it on a 10.5" 5.56.

Loving it.

Dave N
"Better to die for something than live for nothing"

carbonfly
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Posted: 11/30/2013 8:18:07 PM EST
I've got one but I just ordered 2 more thanks to LWRC's black friday 20% off sale!
krichbaum
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Posted: 12/1/2013 12:04:34 PM EST
I got a chance to put some rounds down range with the UC stock today. I used it with my suppressed 9mm setup first, subbing an H2 buffer for the UC2 buffer that the stock comes with. It ran fine with that, felt pretty good, but I want to try a heavier buffer. That said, I don't think it will need a 9 oz buffer like I use normally. This is my perception based on feel but also on what happened when I tried the UC stock with a different upper.

I also brought a 5.45x39 AR with me. It has a S&W barrel with carbine length gas, semi auto bolt, and an H buffer. It's 100% reliable and shoots smooth with this combination. I put this 5.45 upper on the lower with the UC stock after putting the UC2 buffer back in it. It shot fine except it would not lock the bolt back on the last round. I repeated this several times with different mags. The point is, this upper works with a 3.8 oz H buffer, carbine spring, and standard receiver extension but with the UC setup using their flat wire spring and the 3.2 oz UC2 buffer it wouldn't lock the bolt back. So the shorter UC stock setup with their flat wire spring seems to need less buffer weight for proper function (not surprised really but I'm just trying things out).

So far I really like this stock for a compact SBR. I'll try it with a .223/5.56 setup ASAP and see how it works with the UC2 buffer. If it needs to be lightened up, it shouldn't be a problem as the UC2 buffer appears to have two tungsten weights in it which I believe can be replaced with standard steel weights one or both at a time...I think they are the standard size of buffer weights but would need to confirm.

MichaelHK
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Posted: 12/1/2013 1:13:53 PM EST
Any change in blowback with the UCIW stock/buffer compared to the heavy 9mm buffer? Just curious as I usually run slash's 8.5oz 9mm on my suppressed 9mm. Thanks.
krichbaum
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Posted: 12/1/2013 2:20:35 PM EST
Yeah, I think I noticed a bit more. That would likely indicate a little more buffer weight would be better, right?
AlphaOperator
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Posted: 12/1/2013 6:22:34 PM EST
[Jump To Reply]Originally Posted By krichbaum:
I got a chance to put some rounds down range with the UC stock today. I used it with my suppressed 9mm setup first, subbing an H2 buffer for the UC2 buffer that the stock comes with. It ran fine with that, felt pretty good, but I want to try a heavier buffer. That said, I don't think it will need a 9 oz buffer like I use normally. This is my perception based on feel but also on what happened when I tried the UC stock with a different upper.

I also brought a 5.45x39 AR with me. It has a S&W barrel with carbine length gas, semi auto bolt, and an H buffer. It's 100% reliable and shoots smooth with this combination. I put this 5.45 upper on the lower with the UC stock after putting the UC2 buffer back in it. It shot fine except it would not lock the bolt back on the last round. I repeated this several times with different mags. The point is, this upper works with a 3.8 oz H buffer, carbine spring, and standard receiver extension but with the UC setup using their flat wire spring and the 3.2 oz UC2 buffer it wouldn't lock the bolt back. So the shorter UC stock setup with their flat wire spring seems to need less buffer weight for proper function (not surprised really but I'm just trying things out).

So far I really like this stock for a compact SBR. I'll try it with a .223/5.56 setup ASAP and see how it works with the UC2 buffer. If it needs to be lightened up, it shouldn't be a problem as the UC2 buffer appears to have two tungsten weights in it which I believe can be replaced with standard steel weights one or both at a time...I think they are the standard size of buffer weights but would need to confirm.

http://www.krichbaum.net/pics/i.php?/upload/2013/12/01/20131201160308-fb1a4a11-la.jpg


What's the length of the UCIW stock collapsed?
Bullets in a firefight are like candy in kindergarten; bring enough for everyone or you are going be in trouble. - TescoVee

What don't you understand about "...SHALL NOT BE INFRINGED." ?
xtremesports1975
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Posted: 12/2/2013 9:17:30 AM EST
[Last Edit: 12/2/2013 1:54:08 PM EST by xtremesports1975]
[Jump To Reply]Originally Posted By AlphaOperator:
What's the length of the UCIW stock collapsed?


It came in and I test fitted at work just to see the length. Looks like it will bring my 8.5" barreled 300 blackout down to a hair under 23". I can't wait to try it out. Fully collapsed I can still get a good sight picture in my P-223 3x scope.

Fully collapsed including the endplate is exactly 6" on mine.

AlphaOperator
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Posted: 12/5/2013 12:40:37 PM EST
[Jump To Reply]Originally Posted By xtremesports1975:
Originally Posted By AlphaOperator:
What's the length of the UCIW stock collapsed?


It came in and I test fitted at work just to see the length. Looks like it will bring my 8.5" barreled 300 blackout down to a hair under 23". I can't wait to try it out. Fully collapsed I can still get a good sight picture in my P-223 3x scope.

Fully collapsed including the endplate is exactly 6" on mine.

http://i59.photobucket.com/albums/g292/dyihunting/IMG_201312023933_zps368ec339.jpg



Thanks
Bullets in a firefight are like candy in kindergarten; bring enough for everyone or you are going be in trouble. - TescoVee

What don't you understand about "...SHALL NOT BE INFRINGED." ?
pathfilms
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Posted: 12/5/2013 10:19:44 PM EST
What does it weigh?
robertsm
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Posted: 12/8/2013 4:48:31 PM EST
[Last Edit: 12/8/2013 5:27:35 PM EST by robertsm]
Thanks for the heads up I ordered one for my SBR during the Black Friday sale. Anyone have an idea if you could get the JP silent captured buffer to work in this?
GUNGUY148
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Posted: 12/9/2013 3:57:29 PM EST
[Jump To Reply]Originally Posted By JimmyT:
Here's my 9mm SBR.

http://www.ar15.com/media/mediaFiles/26639/57716.JPG


That is beautiful
If the average guy spent more time not being average, then average wouldn't be so fucking mediocre - Hank
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