Free float rail project

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Free float rail project

Post by Solscud007 on Fri Oct 05, 2012 9:54 pm

Update: I finally got the Freefloat rail project done. The delay was from trying to get a two gunsmiths to machine the rail for me. One guy is good at trigger jobs and such but not creative. The second guy is creative but declined the job. Sigh, like most of my KRISS mods, I have to do it myself.

So I got my dremel and hacked away at the top rear of the rail.



Here it is. Setup with my preferred weapon light and green/IR laser.
















So some of you may have noticed that my KRISS shroud has been slightly modified for my shooting grip.



It works for what I need it.

As seen in this video of me on stage 1 at the FNH 3Gun match.



Anyway It has always been nagging me in the back of my mind that I am touching the shroud and the shroud is not only touching the barrel but set screwed onto the barrel.

I had mentioned it earlier that shooting the carbine with out the shroud threw my 50 yd zero off paper. So I figured I would modify a free float rail to fit the KRISS. The only problem is that the Freefloat rails are too narrow and too short. If I want to maintain the length of 12 inches to cover most of the barrel and shroud, then I would need a 15" rail. Not too many companies make 15" rails. And those that do, seem too narrow to fit the shroud inside them.

Well while working Stage 1, I was admiring a kid's freefloat rail. His father was on the same squad shooting and he said he has extras, as they were given to them by their sponsor, Midwest Industries. I got his information and we worked out a deal for the first gen MI 15" freefloat rail. Best of all it isnt black!!!

So it arrived today. I installed the MI short rail and long rail to test out my AFG and light mounted. I also wanted to see if the shroud would still clear inside the shroud. Sure enough it does.

Now I need to take the shroud and KRISS to a machine shop/gunsmith to chop off some of the top so the rail can slide back 3 inches and drill some holes to mount to the two side hard points. This way the rail system will be mounted to the lower receiver and be free floating.




Last edited by Solscud007 on Mon Oct 29, 2012 12:07 pm; edited 1 time in total

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Re: Free float rail project

Post by Solscud007 on Fri Oct 05, 2012 10:26 pm

Photoshop of how it will look when it is done.


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Re: Free float rail project

Post by TXShooter on Fri Oct 05, 2012 11:18 pm

that is pretty sweet!
Is it the MI SS series, or is this somehting new?

I mounted an MI SS series forend on my AK and it is pretty nice, but it uses a barrel clamp.

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Re: Free float rail project

Post by Solscud007 on Fri Oct 05, 2012 11:39 pm

I'm not entirely sure. The previous owner said this was the MI first gen free float.

The box just says MI-T15-FDE.

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Re: Free float rail project

Post by 7c8 on Sat Oct 06, 2012 12:30 pm

I've been thinking about a project like this for a while so I can't wait until get this done!

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Re: Free float rail project

Post by Solscud007 on Mon Oct 29, 2012 12:10 pm

Update. I finished my freefloat project. Now I need to shoot it.

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Re: Free float rail project

Post by 7c8 on Mon Oct 29, 2012 12:48 pm

Wow, that looks freaking nice!

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Re: Free float rail project

Post by Xn0r on Mon Oct 29, 2012 3:14 pm

So how is it free floated? The barrel shroud is attached to the guard outside which is hung on the rail?

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Re: Free float rail project

Post by Solscud007 on Mon Oct 29, 2012 3:39 pm

The freefloat rail is screwed to the side hard points where the factory side rails are mounted. Theoretically it doesn't touch the barrel shroud.

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Re: Free float rail project

Post by CatMostFeared on Mon Oct 29, 2012 8:45 pm

Looks good I'd like to see it in black and round the corners off
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Re: Free float rail project

Post by knedrgr on Mon Oct 29, 2012 11:19 pm

Looks great man!

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Re: Free float rail project

Post by KPV996TT on Sat Nov 03, 2012 6:53 pm

Disregard my post in the other thread! Bad Ass!!!!

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Re: Free float rail project

Post by MASN_Defender on Tue Feb 19, 2013 4:01 pm

Very nice mod. I happen to know that there are 2 existing prototype quadrail systems in progress at Kriss, and there is a scheduled release for some time this spring. Im curious to see how their product compares to yours.

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Re: Free float rail project

Post by Solscud007 on Fri Feb 22, 2013 8:38 pm

MASN_Defender wrote:Very nice mod. I happen to know that there are 2 existing prototype quadrail systems in progress at Kriss, and there is a scheduled release for some time this spring. Im curious to see how their product compares to yours.

It should be better than mine. Mine was a hack job just to get it working. As my friend said I'm a trend setter.

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Re: Free float rail project

Post by nih on Fri Feb 22, 2013 8:51 pm

who wants to play guess what Kriss will charge? I'm going with $399

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Re: Free float rail project

Post by CatMostFeared on Tue Mar 05, 2013 4:15 am

just seeing a rail on the KRISS makes me want a carbine
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Re: Free float rail project

Post by MASN_Defender on Mon Mar 18, 2013 1:58 pm

Finally finished my front rail. Let me know what you all think.





And a short video
http://imageshack.us/clip/my-videos/23/z7kxdrmysqvrtprywlifdx.mp4/


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Re: Free float rail project

Post by mambro on Mon Mar 18, 2013 2:00 pm

Nice! cheers
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Re: Free float rail project

Post by Solscud007 on Mon Mar 18, 2013 2:02 pm

Mind sharing how it was done? Looks like it is affixed to the shroud?

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Re: Free float rail project

Post by MASN_Defender on Mon Mar 18, 2013 2:12 pm

Well, it was a lot easier than I expected actually. I just got on amazon and ordered a free float quad rail for like $15. It is a two-piece rail, so the top half and bottom half bolt together. The only problem I ran into is that the stock bolts aren't long enough because the shroud is so thick, and the rail is actually a little oblong like an oval when you put it together. But the top section has the top rail and side rails while the bottom section is just the bottom rail, so with some longer screws I could leave a little gap because the side rails themselves were not split. Then I just cranked down on the bolts until they don't budge. My first range test resulted in a little slippage from the shock, but at that point I only had the front bolted down. But since then I have gotten the back screwed on as well, and it is super tight. So yes it's technically fixed to the shroud, but nothing actually screws into it.

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Re: Free float rail project

Post by Solscud007 on Mon Mar 18, 2013 3:55 pm

Ok. It should be fine. I would test out your zero at longer distances just to be sure. Also be careful as you put things on the rail, since the shroud is pinned to the barrel, any force will be applied to the barrel.

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Re: Free float rail project

Post by buddybaja on Mon Mar 18, 2013 6:10 pm

Looks awesome but still waiting on a free float rail option i suppose. Good work

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Re: Free float rail project

Post by armenws on Mon Mar 18, 2013 10:53 pm

Neat!

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Re: Free float rail project

Post by Antrax on Sun Mar 24, 2013 3:08 am

very nice.

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Re: Free float rail project

Post by buddybaja on Sun Mar 31, 2013 2:05 am

Solscud007, what rail did you use??? I am really interested in this.

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Re: Free float rail project

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