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Posted: 11/3/2014 12:34:32 PM EDT
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Does anyone run one on their MK18?
If so, what are your thoughts on it? https://www.lwrci.com/p-361-uciw-ultra-compact-stock.aspx |
I don't have a MK18 upper. I do have a 10" upper that I use mine on pretty regularly. I like it and I have not experienced any reliability issues. LWRC seems to have done a good amount of homework and made a quality buffer system. Using the flatwire spring seems to have solved many of the short buffer system problems experienced by other designs. |
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I don't have a MK18 upper. I do have a 10" upper that I use mine on pretty regularly. I like it and I have not experienced any reliability issues. LWRC seems to have done a good amount of homework and made a quality buffer system. Using the flatwire spring seems to have solved many of the short buffer system problems experienced by other designs. http://i739.photobucket.com/albums/xx39/jaqufrost/Mobile%20Uploads/2014-08/20140804_212758_zpsnhera389.jpg That is just too cool. I love that 40 rounder! |
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Thanks. LWRC is going to have the UCIW on sale at the end of the month. That would probably be a good time to pick it up. I've used the UCIW on my .300 blackout, 7.62x39 and 6.8 uppers. Here it is on my 6.8 in a mini recce type build.  My 40rd Pmags get a lot more use on this rifle though.  |
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Thanks. LWRC is going to have the UCIW on sale at the end of the month. That would probably be a good time to pick it up. I've used the UCIW on my .300 blackout, 7.62x39 and 6.8 uppers. Here it is on my 6.8 in a mini recce type build. http://i739.photobucket.com/albums/xx39/jaqufrost/Mobile%20Uploads/2014-08/20140804_213017_zpsmiaymyr9.jpg My 40rd Pmags get a lot more use on this rifle though.  http://youtu.be/-kKWMqt6TnQ
very nice. how do you know it will be cheaper at the end of the month? Black Friday? |
i've got one but have only used it in conjunction with my 7.5" upper - it has worked great with the six or seven types of ammo i've used. heavybuffers.com has an "extra heavy" buffer to use with the UCIW, but it's $135 and i'm having a hard time stomaching that much for a buffer. |
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i've got one but have only used it in conjunction with my 7.5" upper - it has worked great with the six or seven types of ammo i've used. heavybuffers.com has an "extra heavy" buffer to use with the UCIW, but it's $135 and i'm having a hard time stomaching that much for a buffer. <a href="http://s1053.photobucket.com/user/bigmoney327/media/20141101_161527_zpsd1329850.jpg.html" target="_blank">http://i1053.photobucket.com/albums/s466/bigmoney327/20141101_161527_zpsd1329850.jpg</a> Ironic user name. I get it. 
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Quoted: Ironic user name. I get it. Quoted: Quoted: i've got one but have only used it in conjunction with my 7.5" upper - it has worked great with the six or seven types of ammo i've used. heavybuffers.com has an "extra heavy" buffer to use with the UCIW, but it's $135 and i'm having a hard time stomaching that much for a buffer. <a href="http://s1053.photobucket.com/user/bigmoney327/media/20141101_161527_zpsd1329850.jpg.html" target="_blank">http://i1053.photobucket.com/albums/s466/bigmoney327/20141101_161527_zpsd1329850.jpg</a> Ironic user name. I get it. |
I run one on my Poor mans MK18. I had a Vltor mod stock with SpringCo Blue spring and a H2 buffer. It ran smoother with that combo, but I wanted a smaller over all length for concealment. The Ultra Compact stock works though, enough that I have not put the old set up back on it.
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Yes, it is standard mil spec diameter and mil spec stocks fit. Quoted:
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Can you use a regular stock like say a CTR with the UCIW receiver extension? Thanks. I'll be picking one up during the sale then 
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Quoted: Pretty sure the CTR is about 1" longer than the UCIW stock, so there would be no real benefit to running the shorter receiver extension. Quoted: Quoted: Can you use a regular stock like say a CTR with the UCIW receiver extension? Pretty sure the CTR is about 1" longer than the UCIW stock, so there would be no real benefit to running the shorter receiver extension. Here is the UCIW next to a standard M4 stock.  Here is the UCIW extension next to a mil spec extension  Here is a converted CAR stock on a UCIW receiver extension  This is the UCIW next to the NEA for length comparison  |
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I have only have one SBR lower and plan on using a couple different uppers on it. Right now I have a Viltor Imod stock with an 11.5 upper and would like to use the UCIW stock with a 7.5 upper, that's why I asked if I could use a different stock with the UCIW receiver extention.
That converted CAR stock looks damn good. |
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I agree, the converted CAR's are awesome. That one isn't mine, but it's tempted me to go look for a stock to cut. Should be easy to find one. This stock seems pretty nice, I picked one up on sale a few months ago and I'm considering purchasing another. |
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