Author Topic: About an upper  (Read 4427 times)

Offline BlackOrchid

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About an upper
« on: July 18, 2015, 11:14:48 AM »
Hi,

So I want DI, but my default position is to just go blowback if this gets to complex or expensive. Here is what I want for my upper:

upper
https://www.vltor.com/shop/featured/mur-modular-upper-receiver/ without forward assist
or
http://aeroprecisionusa.com/ar15-stripped-upper-receiver.html if I want cheaper. But I really like the look of the vltor.

Guard
http://www.centurionarms.com/product-p/01111.htm with a 5 or 7 inch barrel and a suppressor, (Ill use a barrel shroud/extension until I get the can) Or a shorter guard from the same company, like so: http://www.centurionarms.com/product-p/0609-7.htm I may go with this one anyway. I know I will buy a longer one for my 223 as soon as I can (I have a super heavy YH now, way to heavy for my liking)
(No mater what, the guard should be at or past the end of the barrel, I prefer that it extends so that the can will be partially inside)

Barrel
5-7 inch barrel is a must, I prefer just over 5. Don't want longer.

Assembly
Bolt and barrel and gas tube + assembly of the above by Mad Machinist, or this guy maybe>http://www.rmwxtreme.com
DI Is my preference for sure, but money and preferences of look.

stock
(when I can SBR)
http://www.brownells.com/rifle-parts/stock-parts/buttstocks/ace-m4-socom-stock-prod24960.aspx?avad=avant&aid=133783&cm_mmc=affiliate-_-Itwine-_-Avantlink-_-Custom+Link
or
http://www.webyshops.com/brand/MFT-Battlelink-Stocks-brand/MFT-Battlelink-Minimalist-Stock-Commercial-Black-BMS.html
or
http://www.brownells.com/rifle-parts/stock-parts/buttstocks/ultra-compact-buttstock-kits-prod73333.aspx

Sights
Hk style, maybe. And my holographic that I already have.
http://www.cncguns.com/images/P9240489.JPG
...

Miscellaneous

Flash hider
https://www.lonewolfdist.com/Detail.aspx?PROD=1522

Barrel for blowback (and perhaps DI)
https://www.quartercircle10.com/product/45acp-barrels/
...

Things I am not sure about:

Gas block
(had been looking at a low profile like this:https://www.vltor.com/shop/gas-blocks/gb-clamp-on-set-screw/
Not really sure about the the position of the gas port on the barrel or how far up the barrel it is drilled, or what the width of a barrel for an r45 is. Thus why I want a pro to put this together for me.

Bolt group
Not sure about this either.

Spring for the but stock
Not sure here either.

Last round hold open
I sure hope so!!!


What else?

Offline Johnny_V

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Re: About an upper
« Reply #1 on: July 18, 2015, 11:21:04 AM »
Contact Rudy (MadMachinist) at Macon Armory. He can set you straight on the upper and I'm sure he'd be glad to build one for you. Rudy has built many for members here and have yet to hear any complaints on the quality of his work.
Johnny_V
NRA Endowment Life Member
Member OGCA & GOA
CCW OH & PA

Offline fishfactor

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Re: About an upper
« Reply #2 on: July 19, 2015, 06:42:04 AM »
+1 on Mad Machinist.  Forget looking for all your parts.  Just tell him what you want and be done.  It will be assembled, test fired, and working when you get it.  There are custom parts on a DI that you can't just order.  He makes them in house.

Offline rhw1225

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Re: About an upper
« Reply #3 on: July 19, 2015, 02:42:20 PM »
Hi,

So I want DI, but my default position is to just go blowback if this gets to complex or expensive. Here is what I want for my upper:

upper
https://www.vltor.com/shop/featured/mur-modular-upper-receiver/ without forward assist
or
http://aeroprecisionusa.com/ar15-stripped-upper-receiver.html if I want cheaper. But I really like the look of the vltor.

Guard
http://www.centurionarms.com/product-p/01111.htm with a 5 or 7 inch barrel and a suppressor, (Ill use a barrel shroud/extension until I get the can) Or a shorter guard from the same company, like so: http://www.centurionarms.com/product-p/0609-7.htm I may go with this one anyway. I know I will buy a longer one for my 223 as soon as I can (I have a super heavy YH now, way to heavy for my liking)
(No mater what, the guard should be at or past the end of the barrel, I prefer that it extends so that the can will be partially inside)

Barrel
5-7 inch barrel is a must, I prefer just over 5. Don't want longer.

Assembly
Bolt and barrel and gas tube + assembly of the above by Mad Machinist, or this guy maybe>http://www.rmwxtreme.com
DI Is my preference for sure, but money and preferences of look.

stock
(when I can SBR)
http://www.brownells.com/rifle-parts/stock-parts/buttstocks/ace-m4-socom-stock-prod24960.aspx?avad=avant&aid=133783&cm_mmc=affiliate-_-Itwine-_-Avantlink-_-Custom+Link
or
http://www.webyshops.com/brand/MFT-Battlelink-Stocks-brand/MFT-Battlelink-Minimalist-Stock-Commercial-Black-BMS.html
or
http://www.brownells.com/rifle-parts/stock-parts/buttstocks/ultra-compact-buttstock-kits-prod73333.aspx

Sights
Hk style, maybe. And my holographic that I already have.
http://www.cncguns.com/images/P9240489.JPG
...

Miscellaneous

Flash hider
https://www.lonewolfdist.com/Detail.aspx?PROD=1522

Barrel for blowback (and perhaps DI)
https://www.quartercircle10.com/product/45acp-barrels/
...

Things I am not sure about:

Gas block
(had been looking at a low profile like this:https://www.vltor.com/shop/gas-blocks/gb-clamp-on-set-screw/
Not really sure about the the position of the gas port on the barrel or how far up the barrel it is drilled, or what the width of a barrel for an r45 is. Thus why I want a pro to put this together for me.

Bolt group
Not sure about this either.

Spring for the but stock
Not sure here either.

Last round hold open
I sure hope so!!!


What else?


kinda reminds me of this:
https://youtu.be/7ZwOGVWqHAw

Offline Mad Machinist

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Re: About an upper
« Reply #4 on: July 19, 2015, 06:16:41 PM »
All you want is doable......but will add to cost.....if you'd like to supply the brand specific parts I'll be happy to build with them and deduct my cost on the parts you supply from normal pricing. I have a couple of 8 inch uppers on the shelf.....just haven't put a handguard on them yet.

I only use my own barrels......Need to see more on the barrel nut for the handguard to be 100% sure if it is compatible with the gas system......but looks doable....
I am the only production mfg of DI parts and uppers, I have to make my own gas blocks and tubes as no commercial options exist.
My standard DI is an 8 inch with Samson Evolution......I can use the Aero Precison but it will increase cost.  I have an 8 inch with Samson on the shelf ready to ship.
If you plan on a AAC Tirant and that is why you specify .578 x 28, I make a fixed piston adapter to fit the standard .5/8 x 24 barrel thread. I will not warranty damage to a .578 x 28 as I feel it leaved the muzzle wall too thin. Just doing a rough calculation .578 x 28 leaves a hair over .030 form the bottom of the thread to the bore of the barrel.

In Pistol configuration I do not recommend shorter than 8 inch......I have run a 5 inch DI no problem...but it was as an SBR,

QC10 barrel will not work with CNC AR45....it has no provision for an ejector. It is only compatible with QC10 upper. and only blowback option currently is Olympic.
We are working on a blowback for 45 in final testing.....just haven't decided how to handle the ejector yet when used with CNC AR45 lower.....unfortunately grease gun mags do not have a built in provision for LRBHO....I'm working on an idea but I have several Irons in the fire that must be finished first.
« Last Edit: July 19, 2015, 06:32:46 PM by Mad Machinist »

Offline Mad Machinist

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Re: About an upper
« Reply #5 on: July 19, 2015, 06:44:26 PM »
On the blowback end...I have two prototype bolts almost finished......that should run great with an unmodified CNC AR45 lower.....hope to have it working and ready to test fire in the next two weeks.......

Offline BlackOrchid

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Re: About an upper
« Reply #6 on: July 20, 2015, 11:52:13 AM »
Hi Rudy,

As we talked about on the phone a while back, I am looking forward to your new and improved web pages. It would be nice to see itemized costs and parts. As well as prices for your services, i.e., smithing and building.


What upper exactly do you use? OR did you say you make that?

...

Quote
Just tell him what you want and be done.  It will be assembled, test fired, and working when you get it.  There are custom parts on a DI that you can't just order.

Yes but buying parts and putting it together as much as I can is why I am here. If I just wanted to buy a gun I would do that.
yes, I want to work with a pro. But IF someone else does it all, it will make for a pretty bad hobby.

I am really enjoying putting the lower together now. It is both fun and mentally stimulating to learn and do. There is very little that is fun or interesting about buying something off the shelf.


Offline Mad Machinist

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Re: About an upper
« Reply #7 on: July 20, 2015, 12:01:32 PM »
I'll work you up a deal on a builders kit...I use uppers from several reliable manufacturers that include J&T, Range Tool, Aero Precision, and Tacticall Machining.  See if you can get some dimensions on the barrel nut of the forearm you want to run.....and I'll help confirm if it is compatible with the AR45 gas system.
Rudy
« Last Edit: July 20, 2015, 12:03:32 PM by Mad Machinist »

Offline BlackOrchid

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Re: About an upper
« Reply #8 on: July 20, 2015, 12:09:11 PM »
^^ Very grateful, Rudy!
Ill see what I can learn :)

By the way, I ordered a Super Semi-Automatic (SSAŽ) Trigger from http://geissele.com. I think this is the right trigger for me and this gun. I also have all the lower parts coming in the mail (springs and what not). The only thing I don't have yet is the tube. What do you recommend?

Thanks much.

Offline Mad Machinist

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Re: About an upper
« Reply #9 on: July 20, 2015, 01:26:31 PM »
I usually go with the Magpul kits PSA has on sale.......if I want a NICE trigger I usually just go with a JP or RRA 2 stage.....

Offline Ron458

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Re: About an upper
« Reply #10 on: July 21, 2015, 11:30:14 AM »
All you want is doable......but will add to cost.....if you'd like to supply the brand specific parts I'll be happy to build with them and deduct my cost on the parts you supply from normal pricing. I have a couple of 8 inch uppers on the shelf.....just haven't put a handguard on them yet.

I only use my own barrels......Need to see more on the barrel nut for the handguard to be 100% sure if it is compatible with the gas system......but looks doable....
I am the only production mfg of DI parts and uppers, I have to make my own gas blocks and tubes as no commercial options exist.
My standard DI is an 8 inch with Samson Evolution......I can use the Aero Precison but it will increase cost.  I have an 8 inch with Samson on the shelf ready to ship.
If you plan on a AAC Tirant and that is why you specify .578 x 28, I make a fixed piston adapter to fit the standard .5/8 x 24 barrel thread. I will not warranty damage to a .578 x 28 as I feel it leaved the muzzle wall too thin. Just doing a rough calculation .578 x 28 leaves a hair over .030 form the bottom of the thread to the bore of the barrel.

In Pistol configuration I do not recommend shorter than 8 inch......I have run a 5 inch DI no problem...but it was as an SBR,

QC10 barrel will not work with CNC AR45....it has no provision for an ejector. It is only compatible with QC10 upper. and only blowback option currently is Olympic.
We are working on a blowback for 45 in final testing.....just haven't decided how to handle the ejector yet when used with CNC AR45 lower.....unfortunately grease gun mags do not have a built in provision for LRBHO....I'm working on an idea but I have several Irons in the fire that must be finished first.
I built the first & still building them. Over 6yrs & counting. Sorry but need to set the record strait.

Offline Mad Machinist

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Re: About an upper
« Reply #11 on: July 21, 2015, 12:26:05 PM »
Never said otherwise.....I said "production".......I consider you a custom builder.....

Offline BlackOrchid

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Re: About an upper
« Reply #12 on: July 22, 2015, 03:55:13 PM »
I really appreciate the info and help guys. Every bit of it is interesting to me, from the tech, to the gun its self, to the culture/community/individuals.
Its nice to be able to hear from people, who share there minds freely on something I really enjoy.

Thanks and cheers!