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6x45 Uppers?


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#1 DirtyDave

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Posted 10 November 2012 - 12:31 PM

Anyone shoot a 6x45? I'm going to be building an AR soon and trying to decide on an upper. Really leaning towards a 6x45, doesnt seem to be many options out there though.

#2 nitis

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Posted 10 November 2012 - 01:24 PM

I wish I would have had the cash when new frontier was building them for like $400

Try black hole for barrels or barrels and beyond

Keep us posted on what you find I either want the 6x45 or I might do a Grendel since its more available of the shelf and is kinda popular right now. I want something I can hunt deer with here in California too so either would do just fine for me

#3 dabob

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Posted 10 November 2012 - 03:25 PM

Check out D-Tech! Mike Milli makes quite a few different uppers including 6X45 uppers.

I have one of his 243 WSSM uppers and I really like it. He is now making some DTI uppers that are the 6.8 SPC necked down to 22 cal, 6mm and 25 cal.

#4 Kephers

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Posted 10 November 2012 - 04:59 PM

Wait can this be used on the ar 15 lower platform? Or ar10 lower platform?

#5 chuckocaster

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Posted 10 November 2012 - 05:00 PM

Ar15performance.com has different caliber options too. A good buddy of mine built a 6.8 using one of their barrels, his gun will shoot sub MOA! Three shot groups, it's damn accurate.

#6 nitis

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Posted 10 November 2012 - 05:43 PM

Dtech makes some good stuff but you will have a wait he is very busy

Yes the 6x45 the wssm and the wildcats on the 6.8 case all work in the ar15 frame just different bolt faces accordingly

#7 DirtyDave

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Posted 10 November 2012 - 07:28 PM

Is it worth building an Upper or should I be looking for a complete upper? Cost wise?
What if I find a used 223 upper for cheap and re-barrel it?

#8 chuckocaster

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Posted 11 November 2012 - 05:22 AM

They are easy to build, but usually cheaper to buy already done. But, if you "roll your own" you can get EXACTLY what you want. I guess it all depends on how picky you are, and what hotrod parts you want.

For instance, I have a Stag upper I bought for about $600, add the scope and mount and I'm sitting at about a grand. I just built a 204 upper, and with everything it's about $1400. Is it $400 nicer or more accurate? No. But it does have a cooler tube and some other goodies.

If you do decide to build your own upper, get the vise block! It makes life a WHOLE lot easier, and will save you any hassles and a couple expletives... LOL

#9 Kephers

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Posted 11 November 2012 - 08:25 AM

If you need help workin on the AR15 let me know, its easy to work on. I was an Armorer in the marine corps, I worked on M16's all day long. Same concept just civilian model

#10 DirtyDave

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Posted 11 November 2012 - 08:04 PM

Budget is pretty tight, so building it sounds like a good way to spread out the cost. I am thinking an 18-20" barrel, not too heavy, no flash hider, and just a smooth hand guard. Like the one in this pic I found.

Posted Image

#11 Kephers

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Posted 12 November 2012 - 09:26 AM

I want one! :smiley_green_with_envy:

#12 DirtyDave

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Posted 12 November 2012 - 09:42 AM

I may just buy a 223 upper to start out. I was looking into all the parts to build an upper and prices, and I cant build an upper for the price of this complete DPMS I found at Midway. I will shoot the 223 for a while then rebarrel it for 6x45 later on.
http://www.midwayusa...?cm_vc=wishList

#13 Kephers

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Posted 12 November 2012 - 01:40 PM

Can you use the same bolt carrier and everything as the 223 for the 6x45?

#14 DirtyDave

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Posted 12 November 2012 - 01:53 PM

Yeah it is a 223 case with a 6mm bullet. Run a 223 case through a 6x45 sizing die and you are ready to load em. All you have to change on the gun is the barrel, no special mags or anything like that.
Thats why I'm thinking about just getting a 223 upper for now and when I'm ready to spend another $250 on a barrel, I can switch it out.

#15 ShooterJohn

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Posted 12 November 2012 - 02:00 PM

I have a 7mmTCU upper for my AR's. I liked the cartridge in my Thompson Centers so had one made. Another nice .223 cased round.

#16 nitis

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Posted 12 November 2012 - 02:54 PM

I am leaning towards doing the same thing as u Dave. I am new to black guns so I do not want to order piece by piece so a complete upper and just swapping a barrel is ver appealing to me

I was also looking at model one sales they sell complete kits in several calipers just no 6x45😢

Just keep turning rocks over and we will find something

#17 OrneryOlMofo357

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Posted 12 November 2012 - 03:31 PM

Not trying ti hijack... but has anyone made a 6mm with a .204 case? Wondering if their is already a wildcat cartridge?

#18 DirtyDave

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Posted 12 November 2012 - 03:43 PM

That would be a 6x47 (6mm in a 222 Rem-Mag case). .204 Ruger is a necked down 222 Rem-Mag
6x45 is more popular due to the popularity of the 223 case

#19 nitis

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Posted 12 November 2012 - 04:19 PM

I think it can be done but the cases get a little longer. There is also the 25x45 257 on a 223 and the 25 copperhead on the 204/222 mag case it's all pretty much been done

I am a nut for 25s but I think I will do a 6 x45 because its all but standard production and many more bullet options in the lighter weight bullets

#20 OrneryOlMofo357

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Posted 12 November 2012 - 04:39 PM

Makes sense Dave... The allure of the 223 556 cases already at .22 cal would make it a more desierable switch. Thanks!

#21 Kephers

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Posted 12 November 2012 - 06:23 PM

Yeah it is a 223 case with a 6mm bullet. Run a 223 case through a 6x45 sizing die and you are ready to load em. All you have to change on the gun is the barrel, no special mags or anything like that.
Thats why I'm thinking about just getting a 223 upper for now and when I'm ready to spend another $250 on a barrel, I can switch it out.


nice. I had no clue thats what it was :) I have my wifes lower I can base this off of. If I would have known that I would got the upper a couple months back :(

#22 chuckocaster

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Posted 13 November 2012 - 09:09 PM

Sounds like a good plan DirtyDave! What DPMS upper are you looking at?

#23 DirtyDave

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Posted 13 November 2012 - 10:19 PM

The one in the link I posted in post #12 ^^

I'll shoot the 223 for a while, then I'll have a crap load more once fired brass to load 6x45's later on. I'm thinking the 6mm 75gr or 87gr V-max's should work nicely

#24 chuckocaster

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Posted 13 November 2012 - 10:51 PM

Duh! Glanced right over the link... A friend of mine has that same upper, it's pretty darn nice!

#25 nitis

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Posted 14 November 2012 - 06:02 AM

That upper is what they call a slick side no forward assist or dust cover from what I have gathered is that the only difference?

And does anyone know the advantages or disadvantages of not having those things?

#26 chuckocaster

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Posted 14 November 2012 - 12:48 PM

I think they're just cheaper to make.

I asked my buddy about the forward assist, he was an Airborne Ranger for six years. "You know how many times I used the forward assist? Never, I kept my gun clean and felt like if I had to use it there must be something wrong."

IDK, but I agree with him. I've personally never understood a "flash suppressor" on a civilian gun. A muzzle brake, yes.




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