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View Full Version : What I built around my KAC front sight/GB



cohiba
11-05-07, 22:55
Like the commercial where the couple goes to the architect, places the Kohler faucet on the table and says "build something around this", I've been looking for something to do with my KAC FS/GB that I've had for over a year. Of course, now it looks like these might not be unobtainium for much longer but that's a good thing because they just rock.

My gunsmith recently got two Noveske 10.6 CQB barrels in SS AND chrome lined. Very nice for automatic fire. I had a Vltor VIS lying around after scrounging its previous barrel. Add a KAC 300m BUIS, a PRI gasbuster and the awesome Ion Bond BCG from Dennys and ...voila, a very unique and very reliable shorty blaster.

As my usually iffy luck continued to hold out, my Gemtech can JUST clears the bayonet lug when attaching it. I mean it actually kisses it. Didn't plan for that but thankfully it worked fine.

This thing is so much fun it's ridiculous. Next up, I just have to have a 7.5" in 6.8 SPC. I'll start looking tomorrow. :D

http://i20.photobucket.com/albums/b243/conndcj/IMG_0029.jpg

http://i20.photobucket.com/albums/b243/conndcj/IMG_0028.jpg

http://i20.photobucket.com/albums/b243/conndcj/IMG_0027.jpg

http://i20.photobucket.com/albums/b243/conndcj/IMG_0026.jpg

http://i20.photobucket.com/albums/b243/conndcj/IMG_0025.jpg

http://i20.photobucket.com/albums/b243/conndcj/IMG_0024.jpg

http://i20.photobucket.com/albums/b243/conndcj/IMG_0023.jpg

http://i20.photobucket.com/albums/b243/conndcj/IMG_0022.jpg

http://i20.photobucket.com/albums/b243/conndcj/IMG_0021.jpg

http://i20.photobucket.com/albums/b243/conndcj/IMG_0017.jpg

http://i20.photobucket.com/albums/b243/conndcj/IMG_0015.jpg

Lumpy196
11-05-07, 23:57
Nice.


What optic are you going with?

welchtactical
11-06-07, 00:04
Super nice rig you have. What Gem-Tech FH is that? For a VSBR 6.8mm I'd go with the "PSD" LWRC Short-Stroke upper. I have one in 556, and will probably be ordering one in 6.8mm also. SO Bad ass! Runs like a top and don't have to worry about gas problems. The whole package on a AR lower is shorter than a MP5 and would be lauching .270cal 110gr slugs! Just the trick for mounted work. Can't wait to see how it moves around in a HMMV.

Patrick Aherne
11-06-07, 00:41
Will you be getting the GB pinned?

Robb Jensen
11-06-07, 05:34
Will you be getting the GB pinned?

I too would suggest pinning the FSB/gas block.

rob_s
11-06-07, 06:13
I too would suggest pinning the FSB/gas block.
That was my first thought after seeing the close-ups, and I scroll down to see that two of you have beaten me to it.

cohiba
11-06-07, 09:21
Sorry, I knew I forgot a couple of pics.

You can see where the Noveske 17-4 GB was originally cross pinned. The KAC did not line up in the same spot so, using the set screw from the Noveske, the barrel was dimpled and the set screw inserted.

The GB was also VERY tight and would not go on without the insides being lapped a bit.

Ideally, you would like both the pins and the set screw but this isn't going anywhere.

http://i20.photobucket.com/albums/b243/conndcj/IMG_0020.jpg

http://i20.photobucket.com/albums/b243/conndcj/IMG_0019.jpg

cohiba
11-06-07, 09:24
Nice.


What optic are you going with?

For something this compact, I would hate to weigh it down with an big optic. I think this cries out for a LT Iron Dot or an Aimpoint micro.

cohiba
11-06-07, 09:29
Super nice rig you have. What Gem-Tech FH is that? For a VSBR 6.8mm I'd go with the "PSD" LWRC Short-Stroke upper. I have one in 556, and will probably be ordering one in 6.8mm also. SO Bad ass! Runs like a top and don't have to worry about gas problems. The whole package on a AR lower is shorter than a MP5 and would be lauching .270cal 110gr slugs! Just the trick for mounted work. Can't wait to see how it moves around in a HMMV.


That is the phantom type FH from Gemtech for their G5 suppressor. It also works with my older M4-96QD.

Paulinski
11-06-07, 10:29
When did the Noveske release chrome lined SS barrels?

Nice build. 2 MOA Aimpoint COMP ML3 would by my optic of choice.

III
11-09-07, 18:28
PM me and I will send you a aluminum piece that is not purple.I also have a shop that will install taper pins for you if you are worried about gas leaks ; I don't think you will have a problem though.The only reason we have not fully released this sight is because of the difficulty of properly reaming the taper pin holes.Some authorized dealers will be carrying the sight and will be able to properly install it. Grant has said he wants to carry it and I know of a shop here in Florida that does it.

Spooky130
11-22-07, 09:46
I very happy to see that folding FSB go to good use! Much better than what I would have done with it! Now I need III to start selling them on the open market! I've got a couple pretty good ideas...

Spooky

KevinB
11-25-07, 10:05
PM me and I will send you a aluminum piece that is not purple.I also have a shop that will install taper pins for you if you are worried about gas leaks ; I don't think you will have a problem though.The only reason we have not fully released this sight is because of the difficulty of properly reaming the taper pin holes.Some authorized dealers will be carrying the sight and will be able to properly install it. Grant has said he wants to carry it and I know of a shop here in Florida that does it.

COOL -- I had missed this little tidbit.

I love this front sight (and wont go anywhere unpinned)


Even I, knuckle dragger Mk1 can drill and use a taper reamer...
-- but I have this rule about not building my own work guns...