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Old September 5th, 2011, 02:28 AM #1
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Non-223/5.56 AR build info

Thread for AR caliber build info not in .223 or 5.56mm.
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Old September 5th, 2011, 09:51 AM #2
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9mm Build

Required parts
1) 9mm upper receiver group
2) 9mm magazine well adapter OR a 9mm lower receiver
3) 9mm buffer
4) 9mm magazines


Notes:
- If you decide to buy an upper receiver and add a 9mm barrel, there will be no shell deflector as is normally integrated on dedicated 9mm uppers.

- For functionality it is accepted that either a ramped bolt group carrier OR a 9mm hammer is a necessity.


Reference:
http://www.mdshooters.com/showthread.php?t=59223
http://www.mdshooters.com/showthread.php?t=54359


Disclaimer:
I found this information through a few searches, if it's incorrect, please say so and I'll VERY gladly edit this post. I'm just trying to save someone else the time and hassle I've spent searching.


EDIT:

If using the pro-mag mag block (which apparently is a copy of the old C-products mag block), you may have to dremmel/file down the feed ramp to accommodate the incorrect height of the ramps. I found this out with my own pro-mag block and some research on the web about common feeding issues. If you try to use it with the stock height, you'll notice rounds slamming into the ramp instead of feeding into the chamber. I'll try to post some pictures of the modified block later.






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Last edited by r3t1awr3yd; March 25th, 2013 at 02:19 PM. Reason: To update info after a build
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Old September 5th, 2011, 10:18 AM #3
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300 BLK: Everything AR minus the barrel! (This may be cheating.)
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Old September 5th, 2011, 10:29 AM #4
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I have been toying with a 458 socom or 500 beo build. I am leaning towards either a 223 or 458 pistol build just for something different.
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Old September 5th, 2011, 07:07 PM #5
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Quote:
Originally Posted by hvymax View Post
I have been toying with a 458 socom or 500 beo build. I am leaning towards either a 223 or 458 pistol build just for something different.
Pistols Ar's are fun to shoot. I'm a little more than halfway through my 300 blackout pistol build now. Make sure you put a good trigger in it. The RRA pistol buffer tube along with an Magpul sling plate is a good combination and doesn't require any extra filing to hold the buffer detent.
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Old September 5th, 2011, 07:29 PM #6
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I have a 5.7 upper for my AR, and all it requires is buying the upper, because it comes with the barrel and everything if you get it through any supplier (best price i found was copesdistributing.net)

a buddy of mine jut did the 300 blk out, and it's cool build as well.
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Old September 6th, 2011, 09:02 AM #7
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7.62x39 (AR-AK, AR-47)

Required parts
1) 7.62x39 upper
2) 7.62x39 bolt head and firing pin
3) Fully shrouded M16 bolt carrier
4) 9mm buffer


Notes:
- Cheaper bolt carrier groups will not get enough penetration for some cheaper types of ammo. A dedicated 7.62x39 bolt head and pin should fix this issue.
- "Good magazines are also important for 7.62x39 ARs. CProducts is generally known to make good 7.62x39 AR mags. I have multibple of both 10 round and 30 CProducts mags and they work great in my AR. I do not have any other types of mags, but I have heard that not all work as well." - JKrew


Reference:
http://www.mdshooters.com/showthread.php?t=28082


Disclaimer:
I found this information through a few searches, if it's incorrect, please say so and I'll VERY gladly edit this post. I'm just trying to save someone else the time and hassle I've spent searching.
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Last edited by r3t1awr3yd; February 6th, 2012 at 03:11 PM.
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Old September 6th, 2011, 09:23 AM #8
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308 AR's - just about everything is different except for the FCG, some pins/springs/fasteners, and a couple other things.
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Old September 8th, 2011, 04:05 PM #9
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6.8 SPC Build"

6.8 SPC Bolt
6.8 SPC Barrel
6.8 SPC Magazine

Note there are two primary chambers that are available for the 6.8 SPC.

The SAMMI spec chamber with minimal throat (the one Remmington advocated) and the SPC II chamber with the longer throat.

The SPC II chamber is the closest to the chamber used by the developers of the 6.8 SPC and handles pressure much better than the SAMMI chamber. The difference is much like the difference between .223 and 5.56 chambers.

If you plan on reloading look for a barrel with a 1:11 to 1:12 twist rate with the SPC 2 chamber for maximum performance. Such a barrel will also handle SSA's 'tactical loads'.
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Old September 9th, 2011, 12:09 PM #10
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Quote:
Originally Posted by r3t1awr3yd View Post
Required parts
1) 7.62x39 upper
2) 7.62x39 bolt head and firing pin
3) Fully shrouded M16 bolt carrier
4) 9mm buffer


Notes:
- Cheaper bolt carrier groups will not get enough penetration for some cheaper types of ammo. A dedicated 7.62x39 bolt head and pin should fix this issue.


Reference:
http://www.mdshooters.com/showthread.php?t=28082


Disclaimer:
I found this information through a few searches, if it's incorrect, please say so and I'll VERY gladly edit this post. I'm just trying to save someone else the time and hassle I've spent searching.
Good magazines are also important for 7.62x39 ARs. CProducts is generally known to make good 7.62x39 AR mags. I have multibple of both 10 round and 30 CProducts mags and they work great in my AR. I do not have any other types of mags, but I have heard that not all work as well.
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