What Calibers are available for the AR platform

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[ARCHIVED THREAD] - What Calibers are available for the AR platform

Posted: 3/25/2008 11:12:38 AM EDT

I would like to get a list going for all available calibers as long as they work with the standard AR15 lower reciever not AR10 lowers. I know the basics but would like to know all of the wildcat calibers. Please only list ones that are in production or will come into production not one-off prototypes made for the fun of it. If something is obscure and only available from 1 or so manufactures please provide links. I will update in my original post. Thanks guys

Posted: 3/26/2008 4:45:45 PM EDT

[#1]

I'll start, but someone needs to fill in the holes

17 Mach IV
17 Remington
19 Calhoun
20 Tactical
204 Ruger
222 Remington
221 Fireball
223 Remington
6-223 (6x45)
6.5 MPC
7x40 (old 3 gun round)
6.5 x 33 (6.5 Whisper)
7 Whisper
6 WOA
6 - 6.8
223 - 6.8 (various names)
6.8 SPC
9mm
22LR
17 Mach2 or whatever it is called
5.45 x 39
7.62x39
10mm
45 ACP
40 Super
40 S&W
357 Sig
7.62x25
9x23
50AE
44 Mag
44 AutoMag
357 AutoMag
440 CorBon
40 X (40-50AE)
502 TS (rebated 50AE)
458 SOCOM
499 LW
50 Beowulf
450 Bushmaster
500 Phantom
223 WSSM
243 WSSM
25 WSSM
30 WSSM
410 ga
32 ACP (Tromix prototype)
300 Whisper
338 Whisper
338 Spectre
7 BR
6.5 BR-R (rebated rim)
6.5 Grendel
30 PPC
6 PPC
7.62x39 AI

That should do for now ...

Posted: 3/26/2008 4:51:38 PM EDT

[#2]

Quoted:
I'll start, but someone needs to fill in the holes

17 Mach IV
17 Remington
19 Calhoun
20 Tactical
204 Ruger
222 Remington
221 Fireball
223 Remington
6-223 (6x45)
6.5 MPC
7x40 (old 3 gun round)
6.5 x 33 (6.5 Whisper)
7 Whisper
6 WOA
6 - 6.8
223 - 6.8 (various names)
6.8 SPC
9mm
22LR
17 Mach2 or whatever it is called
5.45 x 39
7.62x39
10mm
45 ACP
40 Super
40 S&W
357 Sig
7.62x25
9x23
50AE
44 Mag
44 AutoMag
357 AutoMag
440 CorBon
40 X (40-50AE)
502 TS (rebated 50AE)
458 SOCOM
499 LW
50 Beowulf
450 Bushmaster
500 Phantom
223 WSSM
243 WSSM
25 WSSM
300 WSSM
410 ga
32 ACP (Tromix prototype)
300 Whisper
338 Whisper
338 Spectre
7 BR
6.5 BR-R (rebated rim)
6.5 Grendel
30 PPC
6 PPC
7.62x39 AI

That should do for now ...

Nice list...just one minor correction.

Posted: 3/26/2008 7:11:38 PM EDT

[#3]

awesome that is exactly what I am looking for

Posted: 3/26/2008 7:57:20 PM EDT

[#4]

Man, it's gonna take years to collect the whole set!

Posted: 3/27/2008 11:34:04 AM EDT

[#5]

isn't there a 50bmg upper that uses a regular ar lower? it is bolt action but not a 1 off if i remember correctly...

Posted: 3/27/2008 11:35:25 AM EDT

[#6]

Quoted:
isn't there a 50bmg upper that uses a regular ar lower? it is bolt action but not a 1 off if i remember correctly...

There are several of them, I have two myself.

Posted: 3/28/2008 8:31:27 PM EDT

[#7]

Quoted:
isn't there a 50bmg upper that uses a regular ar lower? it is bolt action but not a 1 off if i remember correctly...

I was eliminating those as they do not use the standard AR mag well for feeding. If you go that route you can include

50 BMG
416 Barrett
22LR - American 180 style
5.7 x 28 using P90 mags
A pile of others that fit the 50 BMG mags ...

Posted: 7/21/2008 6:20:43 AM EDT

[#8]

Quoted:

Quoted:
isn't there a 50bmg upper that uses a regular ar lower? it is bolt action but not a 1 off if i remember correctly...

I was eliminating those as they do not use the standard AR mag well for feeding. If you go that route you can include

50 BMG
416 Barrett
22LR - American 180 style
5.7 x 28 using P90 mags
A pile of others that fit the 50 BMG mags ...

Are you talking about the rhineland arms project? I was under the impression that was a no go.

Posted: 7/21/2008 6:34:16 AM EDT

[#9]

Quoted:

Quoted:
isn't there a 50bmg upper that uses a regular ar lower? it is bolt action but not a 1 off if i remember correctly...

I was eliminating those as they do not use the standard AR mag well for feeding. If you go that route you can include

50 BMG
416 Barrett
22LR - American 180 style
5.7 x 28 using P90 mags
A pile of others that fit the 50 BMG mags ...

Are you talking about the rhineland arms project? I was under the impression that was a no go.

There was discussion about the AR57 platform.

www.ar15.com/forums/topic.html?b=3&f=121&t=375974

In that thread, there's a link (shown below) to the website that is going to sell them.
www.militarygunsupply.com/shop2/index.php?main_page=product_info&cPath=35&products_id=338

Posted: 7/26/2008 9:08:23 PM EDT

[#10]

Is the 357 Automag the same as a 357 Mag pistol round ? if it is
please say where can I get one !!

Posted: 7/26/2008 10:55:05 PM EDT

[#11]

Quoted:
Man, it's gonna take years to collect the whole set!

Tell me about it!

Posted: 7/27/2008 8:09:14 PM EDT

[#12]

Need to add:

6.5X243 WSSM

6.5X257 WSSM

The ejection port needs enlarging & the mag followers need to be modified. That & there is no commercial ammo available. This round should be able to duplicate 260 Remington ballistics.

ETA: http://www.dtechsuperstore.com/Wildcat.htm

Posted: 7/27/2008 8:16:23 PM EDT

[#13]

A friend of mine has build a few "new" Ar platform rifles as well. Here is one in 22-250.

He is going to market this conversion and a few others that use the AR-10 platform.

Posted: 7/27/2008 9:11:27 PM EDT

[#14]

Quoted:
Is the 357 Automag the same as a 357 Mag pistol round ? if it is
please say where can I get one !!

Nope. 357 AutoMag is (more or less) a .308 Win case cut short and necked to .357. Recall (or Google depending on your age) Dirty Harry using the 44 AutoMag in "Sudden Impact". This same round necked down to .357 gives the .357 AMP (Auto Mag Pistol).

VERY different from the .357 Magnum commonly found in revolvers and other firearms.

Posted: 8/20/2008 2:20:01 PM EDT

[#15]

so you can use a standard ar15 lower receiver with differnt calibers? im new to AR's and just bought 2 double star receivers. waiting to get them now!!

[ARCHIVED THREAD] - What Calibers are available for the AR platform

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